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#46
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AcomData drive problem
On 4/29/2015 1:21 AM, Paul wrote:
cameo wrote: I've found this ad that seems to be for an identical PCB to mine, though if you look the stuff in the DESCRIPTION tab, including the video clip, they also seem to be in the recovery business. So ... I'd like to hear your take on it. http://www.donordrives.com/wd800bb-00fja0-2061-001130-300-ad-wd-ide-3-5-pcb.html?gclid=CPfauqa5msUCFdSTfgod_TQAYQ There goes another long link. ;-) Well, I don't work for WDC, so I don't know their exact practice. I try to view these things in terms of the "necessity" of doing things a certain way. AFAIK, the controller only contains bootstrap code. That bootstrap must be able to operate the arm, the read channels, well enough to read out the service area. Then, the code in the service area can take over. On the one hand, you have a couple of identifying numbers for the PCBA (PCB and assembled set of components). Such could include a particular instance of firmware. If we got two boards with the same identifying numbers, one would hope that the identifiers are enough for an employee to match a PCBA to a disk drive. I could understand, if we were mixing the wrong PCBA from the beginning of the production run, maybe there could be some justification for mixing and matching bootstraps with PCBAs. Swapping chips, using a JTAG header or a bed of nails, to reprogram the hardware. I thought, based on the 12 character identifier on some of these chips, that the code loaded in them was write-once (ROM mask maybe). While they could be EEPROM, if they were EEPROM based, I would have expected to "read more tales" of people screwing with that aspect of the drive. So while on the one hand, I want to believe that donordrives has my best interests at heart, that they're just angling for a more expensive (data-recovery-like) service charge. Who knows whether they changed anything or not ? It makes no sense to "wed" the HDA and the PCB to one another. Like exchange keys. It would be important for the PCBA to know how to operate the electromechanical items inside the HDA. Maybe there could be a production change requiring a difference to be programmed into a PCB. But I would think for a high-volume company, it would be insanity to be doing this sort of thing all the time. If I had to do what you're doing, I would have to be content matching the numbers, and taking my chances. I tend to lean to that direction, too. Especially now, that they wrote me back that I could return the PCB within 30 days for refund. Here is what I wrote to them: ------------ I am interested in buying the WD800BB-00FJA0 PCB from you to replace the identical, but defunct PCB on my 80GB WD hard drive. Your Web link is detailed enough for me to guess that this PCB might work with my HD without any additional fix, but I am still held back by the fact that the above link does not show the more important component side of the PCB that would show me that all the chips on it are also identical to those on my old PCB. Could you, please, include a photo of the other side, too, or at least send it to me as an email attachment? I also wonder if I could return the PCB for refund if it turns out not to be a perfect match for my HD? Since my HD does not hold absolutely essential data for me, it would not be worth for me to order an expensive data retrieval service beyond just buying this replacement PCB. ----------------- This is what they replied: ------------- The main factor in determining PCB compatibility is the PWB number. As long as this matches, this product will be a compatible PCB donor. Unfortunately, I will let you know that for Western Digital PCBs a direct swap almost never works because there is a small chip with the ROM information that needs to be adapted to the new PCB. This chip contains information that is completely unique to your HDD, similar to a key for a lock, allowing your computer to correctly identify the HDD and gain access to its data. We do provide this service for $60; this price includes the cost of the PCB as well. If you are interested in sending your media for this service, please see the link below and follow the steps to complete the project request. http://outsourcedatarecovery.com/submit-service/step-1/ If you would prefer to purchase the PCB and attempt the swap yourself, we do offer full refunds for items returned within 30 days from the date of purchase. ---------------------------- The promise of refund is a good thing, though I am a bit ****ed that they are not willing to show the component side of the PCB. I might even go for that $60 deal but I have no intention to send my hard drive to them. I don't trust them that much! Oh, BTW, what is that PWB number they are referring to and what would that be in my case? Thanks again for your input. |
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#47
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AcomData drive problem
cameo wrote:
On 4/29/2015 1:21 AM, Paul wrote: cameo wrote: I've found this ad that seems to be for an identical PCB to mine, though if you look the stuff in the DESCRIPTION tab, including the video clip, they also seem to be in the recovery business. So ... I'd like to hear your take on it. http://www.donordrives.com/wd800bb-00fja0-2061-001130-300-ad-wd-ide-3-5-pcb.html?gclid=CPfauqa5msUCFdSTfgod_TQAYQ There goes another long link. ;-) Well, I don't work for WDC, so I don't know their exact practice. I try to view these things in terms of the "necessity" of doing things a certain way. AFAIK, the controller only contains bootstrap code. That bootstrap must be able to operate the arm, the read channels, well enough to read out the service area. Then, the code in the service area can take over. On the one hand, you have a couple of identifying numbers for the PCBA (PCB and assembled set of components). Such could include a particular instance of firmware. If we got two boards with the same identifying numbers, one would hope that the identifiers are enough for an employee to match a PCBA to a disk drive. I could understand, if we were mixing the wrong PCBA from the beginning of the production run, maybe there could be some justification for mixing and matching bootstraps with PCBAs. Swapping chips, using a JTAG header or a bed of nails, to reprogram the hardware. I thought, based on the 12 character identifier on some of these chips, that the code loaded in them was write-once (ROM mask maybe). While they could be EEPROM, if they were EEPROM based, I would have expected to "read more tales" of people screwing with that aspect of the drive. So while on the one hand, I want to believe that donordrives has my best interests at heart, that they're just angling for a more expensive (data-recovery-like) service charge. Who knows whether they changed anything or not ? It makes no sense to "wed" the HDA and the PCB to one another. Like exchange keys. It would be important for the PCBA to know how to operate the electromechanical items inside the HDA. Maybe there could be a production change requiring a difference to be programmed into a PCB. But I would think for a high-volume company, it would be insanity to be doing this sort of thing all the time. If I had to do what you're doing, I would have to be content matching the numbers, and taking my chances. I tend to lean to that direction, too. Especially now, that they wrote me back that I could return the PCB within 30 days for refund. Here is what I wrote to them: ------------ I am interested in buying the WD800BB-00FJA0 PCB from you to replace the identical, but defunct PCB on my 80GB WD hard drive. Your Web link is detailed enough for me to guess that this PCB might work with my HD without any additional fix, but I am still held back by the fact that the above link does not show the more important component side of the PCB that would show me that all the chips on it are also identical to those on my old PCB. Could you, please, include a photo of the other side, too, or at least send it to me as an email attachment? I also wonder if I could return the PCB for refund if it turns out not to be a perfect match for my HD? Since my HD does not hold absolutely essential data for me, it would not be worth for me to order an expensive data retrieval service beyond just buying this replacement PCB. ----------------- This is what they replied: ------------- The main factor in determining PCB compatibility is the PWB number. As long as this matches, this product will be a compatible PCB donor. Unfortunately, I will let you know that for Western Digital PCBs a direct swap almost never works because there is a small chip with the ROM information that needs to be adapted to the new PCB. This chip contains information that is completely unique to your HDD, similar to a key for a lock, allowing your computer to correctly identify the HDD and gain access to its data. We do provide this service for $60; this price includes the cost of the PCB as well. If you are interested in sending your media for this service, please see the link below and follow the steps to complete the project request. http://outsourcedatarecovery.com/submit-service/step-1/ If you would prefer to purchase the PCB and attempt the swap yourself, we do offer full refunds for items returned within 30 days from the date of purchase. ---------------------------- The promise of refund is a good thing, though I am a bit ****ed that they are not willing to show the component side of the PCB. I might even go for that $60 deal but I have no intention to send my hard drive to them. I don't trust them that much! Oh, BTW, what is that PWB number they are referring to and what would that be in my case? Thanks again for your input. Printed Wire Board is roughly the same as Printed Circuit Board. It's a term more popular a long time ago. There should be a printed circuit board number. The PCBA is the assembly number, which is a way of determining what components are soldered to a board. The difference between those, is the PCB part number (bare board, no components) can be written in white paint in the silk screen component labeling layer. Whereas another means must be used to write an assembly number. It could be a sticker, it could be a field to the right of the PCB number. For example, in the silk screen I could do PCB 12345678-( . ) and an assembly person could write the assembly number into the blank field separated by a dot. Maybe the assembly is 23.1 or something. A pen with a solvent-proof ink could be used to write the number. Or a sticker could be used (which could wash off in a solvent shower). If the PCB has an eight pin DIP, that can be one of two things. It could be a 2KB serial EEPROM. Such things are used for keeping configuration information, and not executable code. Or, the device could be larger (up to 8MB) and have a SPI serial interface running at 33MHz. That would allow the device to be big enough to hold a significant amount of code. Leaving the Service Area to only have records of bad blocks, remaining spare sectors, results of SMART short test, and so on. It would be a poor volume manufacturing process, to "key" the PCB to each disk drive. While it's easy to do (automated machine uses spring loaded contacts to contact the PCB on the production line and program something), it fails the "necessity" test. What purpose does such keying serve ? The assembler puts the controller board on the disk, and out the door it goes. There is no need to encode any further information. The controller board should be ready to read the Service Area of any disk which has the same electromechanical controls and characteristics. For example, the head assembly has to be compatible with the read channel preamp and decoding. While somebody could mis-pair a controller with a disk, by the time the controller board has read the Service Area, it has *already* had to use every electromechanical feature of the HDA. So there's really no reason to "protect" the drive mechanism, when it's already too late. Anything is possible. Engineers do strange things. Extra "process steps" can be added for no good reason (vendor lockin perhaps). Maybe there is a good reason to be reprogramming SPI chips. Knowing what little I do about how these things work, I just don't see the necessity of doing so. If other brands can work without changes of this sort, so could a WDC product. If the $60 is too much (chip swap), phone a TV-Radio repair operation, and ask for a quote to change out an 8 pin chip. You'll need to tell them whether the chip is "thru-hole" (legs go through the PCB) or "surface mount". For surface mount, they would be worried about the contacts being hidden underneath the chip, like in a FBGA package. You use a hot air rework station for surface mount (if the legs or contacts are hidden). Some surface mount, I do them here. I can do 0603 caps with two soldering irons, one placed on either end of the chip cap. Doing an 8 pin DIP would be relatively easy, *if* the replacement chip was sitting in your hand, brand new. You could cut the old chip off, clean the installation site with solder wick and isopropyl, then solder in the new chip. But if doing a chip swap, one of the unsoldering operations must remove the chip intact. And that's harder to do. One participant in the forums here, uses "ChipQuik", a low temperature solder. You apply "extra" solder from the tube of ChipQuik. This reduces the melting point. And makes it easier to heat the work up so all the legs release at the same time. This stuff was always expensive, and the emphasis is now on paste products for surface mount work. The solder has things like Bismuth added to drop the melting point. I was not able to find examples of the original kits, as I guess there would not be as much call in the market for those kits. http://playstation.hottoyssuperstore...kit-B0019UZP7I Instead of that, you can also use Solder Wick. That sucks the molten solder out of each hole, until you can push the IC leg out of the hole. But that is a pretty fiddly process. You practice first, on electronics you don't care about. If I hadn't been soldering lately, even I might practice a bit first, rather than ruin something important. For small work, I like the finest braid I can find, and this one is 0.025" wide. The picture is of a much wider roll of wick, which isn't as good (Radio Shack will gladly sell you a roll of very wide, useless wick). You press the wick down with the tip of the soldering iron, and excess solder flows by capillary action into the wick. If you "flatten" the wick, by pushing down on the wick with a pair of pliers, and sometimes that enhances the absorption characteristics. http://canada.newark.com/tenma/21-83...0ft/dp/03M9678 The thing to watch there, is de-laminating the PCB. Cheap PCBs will not take much heat, and the surface pads can lift right off. When I changed the voltage regulator DIP on my 440BX motherboard, I was being careful, and I still managed to tear off an unused pad on the surface of the motherboard. (I changed the regulator, so I could run 1.5V processors on a 1.75V motherboard.) The PCBs we made at work, by comparison, were bulletproof. Even my most ham-fisted colleague at work, could de-solder one of those and never lift a pad. Some of our PCB blanks, cost as much to make as a retail computer motherboard. The idea was, the boards must be repairable - and making good PCBs was all part of the process. You could replace a large FBGA on one of those boards, up to three times, and the board was supposed to take it. It's because the product retail price was so high, that customers would feel "cheated" if the product could not be repaired readily. Paul |
#48
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AcomData drive problem
On 4/29/2015 5:27 PM, Paul wrote:
cameo wrote: On 4/29/2015 1:21 AM, Paul wrote: cameo wrote: I've found this ad that seems to be for an identical PCB to mine, though if you look the stuff in the DESCRIPTION tab, including the video clip, they also seem to be in the recovery business. So ... I'd like to hear your take on it. http://www.donordrives.com/wd800bb-00fja0-2061-001130-300-ad-wd-ide-3-5-pcb.html?gclid=CPfauqa5msUCFdSTfgod_TQAYQ There goes another long link. ;-) Well, I don't work for WDC, so I don't know their exact practice. I try to view these things in terms of the "necessity" of doing things a certain way. AFAIK, the controller only contains bootstrap code. That bootstrap must be able to operate the arm, the read channels, well enough to read out the service area. Then, the code in the service area can take over. On the one hand, you have a couple of identifying numbers for the PCBA (PCB and assembled set of components). Such could include a particular instance of firmware. If we got two boards with the same identifying numbers, one would hope that the identifiers are enough for an employee to match a PCBA to a disk drive. I could understand, if we were mixing the wrong PCBA from the beginning of the production run, maybe there could be some justification for mixing and matching bootstraps with PCBAs. Swapping chips, using a JTAG header or a bed of nails, to reprogram the hardware. I thought, based on the 12 character identifier on some of these chips, that the code loaded in them was write-once (ROM mask maybe). While they could be EEPROM, if they were EEPROM based, I would have expected to "read more tales" of people screwing with that aspect of the drive. So while on the one hand, I want to believe that donordrives has my best interests at heart, that they're just angling for a more expensive (data-recovery-like) service charge. Who knows whether they changed anything or not ? It makes no sense to "wed" the HDA and the PCB to one another. Like exchange keys. It would be important for the PCBA to know how to operate the electromechanical items inside the HDA. Maybe there could be a production change requiring a difference to be programmed into a PCB. But I would think for a high-volume company, it would be insanity to be doing this sort of thing all the time. If I had to do what you're doing, I would have to be content matching the numbers, and taking my chances. I tend to lean to that direction, too. Especially now, that they wrote me back that I could return the PCB within 30 days for refund. Here is what I wrote to them: ------------ I am interested in buying the WD800BB-00FJA0 PCB from you to replace the identical, but defunct PCB on my 80GB WD hard drive. Your Web link is detailed enough for me to guess that this PCB might work with my HD without any additional fix, but I am still held back by the fact that the above link does not show the more important component side of the PCB that would show me that all the chips on it are also identical to those on my old PCB. Could you, please, include a photo of the other side, too, or at least send it to me as an email attachment? I also wonder if I could return the PCB for refund if it turns out not to be a perfect match for my HD? Since my HD does not hold absolutely essential data for me, it would not be worth for me to order an expensive data retrieval service beyond just buying this replacement PCB. ----------------- This is what they replied: ------------- The main factor in determining PCB compatibility is the PWB number. As long as this matches, this product will be a compatible PCB donor. Unfortunately, I will let you know that for Western Digital PCBs a direct swap almost never works because there is a small chip with the ROM information that needs to be adapted to the new PCB. This chip contains information that is completely unique to your HDD, similar to a key for a lock, allowing your computer to correctly identify the HDD and gain access to its data. We do provide this service for $60; this price includes the cost of the PCB as well. If you are interested in sending your media for this service, please see the link below and follow the steps to complete the project request. http://outsourcedatarecovery.com/submit-service/step-1/ If you would prefer to purchase the PCB and attempt the swap yourself, we do offer full refunds for items returned within 30 days from the date of purchase. ---------------------------- The promise of refund is a good thing, though I am a bit ****ed that they are not willing to show the component side of the PCB. I might even go for that $60 deal but I have no intention to send my hard drive to them. I don't trust them that much! Oh, BTW, what is that PWB number they are referring to and what would that be in my case? Thanks again for your input. Printed Wire Board is roughly the same as Printed Circuit Board. It's a term more popular a long time ago. OK, I placed the order for a hopefully matching PCB. Since it was apparently manufactured by Foxconn, the same high volume company that makes the Apple iPhones and iPads, I assume their processes are very standardized. So maybe I have a better than even chance to get perfect replacement for my PCB. If not, I just return it for a refund. Because the component leads are so tiny and tightly packed, I would not volunteer for any soldering fixes myself. Finding a skilled electronics repairman is also not easy. |
#49
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AcomData drive problem
cameo wrote:
On 4/29/2015 5:27 PM, Paul wrote: cameo wrote: On 4/29/2015 1:21 AM, Paul wrote: cameo wrote: I've found this ad that seems to be for an identical PCB to mine, though if you look the stuff in the DESCRIPTION tab, including the video clip, they also seem to be in the recovery business. So ... I'd like to hear your take on it. http://www.donordrives.com/wd800bb-00fja0-2061-001130-300-ad-wd-ide-3-5-pcb.html?gclid=CPfauqa5msUCFdSTfgod_TQAYQ There goes another long link. ;-) Well, I don't work for WDC, so I don't know their exact practice. I try to view these things in terms of the "necessity" of doing things a certain way. AFAIK, the controller only contains bootstrap code. That bootstrap must be able to operate the arm, the read channels, well enough to read out the service area. Then, the code in the service area can take over. On the one hand, you have a couple of identifying numbers for the PCBA (PCB and assembled set of components). Such could include a particular instance of firmware. If we got two boards with the same identifying numbers, one would hope that the identifiers are enough for an employee to match a PCBA to a disk drive. I could understand, if we were mixing the wrong PCBA from the beginning of the production run, maybe there could be some justification for mixing and matching bootstraps with PCBAs. Swapping chips, using a JTAG header or a bed of nails, to reprogram the hardware. I thought, based on the 12 character identifier on some of these chips, that the code loaded in them was write-once (ROM mask maybe). While they could be EEPROM, if they were EEPROM based, I would have expected to "read more tales" of people screwing with that aspect of the drive. So while on the one hand, I want to believe that donordrives has my best interests at heart, that they're just angling for a more expensive (data-recovery-like) service charge. Who knows whether they changed anything or not ? It makes no sense to "wed" the HDA and the PCB to one another. Like exchange keys. It would be important for the PCBA to know how to operate the electromechanical items inside the HDA. Maybe there could be a production change requiring a difference to be programmed into a PCB. But I would think for a high-volume company, it would be insanity to be doing this sort of thing all the time. If I had to do what you're doing, I would have to be content matching the numbers, and taking my chances. I tend to lean to that direction, too. Especially now, that they wrote me back that I could return the PCB within 30 days for refund. Here is what I wrote to them: ------------ I am interested in buying the WD800BB-00FJA0 PCB from you to replace the identical, but defunct PCB on my 80GB WD hard drive. Your Web link is detailed enough for me to guess that this PCB might work with my HD without any additional fix, but I am still held back by the fact that the above link does not show the more important component side of the PCB that would show me that all the chips on it are also identical to those on my old PCB. Could you, please, include a photo of the other side, too, or at least send it to me as an email attachment? I also wonder if I could return the PCB for refund if it turns out not to be a perfect match for my HD? Since my HD does not hold absolutely essential data for me, it would not be worth for me to order an expensive data retrieval service beyond just buying this replacement PCB. ----------------- This is what they replied: ------------- The main factor in determining PCB compatibility is the PWB number. As long as this matches, this product will be a compatible PCB donor. Unfortunately, I will let you know that for Western Digital PCBs a direct swap almost never works because there is a small chip with the ROM information that needs to be adapted to the new PCB. This chip contains information that is completely unique to your HDD, similar to a key for a lock, allowing your computer to correctly identify the HDD and gain access to its data. We do provide this service for $60; this price includes the cost of the PCB as well. If you are interested in sending your media for this service, please see the link below and follow the steps to complete the project request. http://outsourcedatarecovery.com/submit-service/step-1/ If you would prefer to purchase the PCB and attempt the swap yourself, we do offer full refunds for items returned within 30 days from the date of purchase. ---------------------------- The promise of refund is a good thing, though I am a bit ****ed that they are not willing to show the component side of the PCB. I might even go for that $60 deal but I have no intention to send my hard drive to them. I don't trust them that much! Oh, BTW, what is that PWB number they are referring to and what would that be in my case? Thanks again for your input. Printed Wire Board is roughly the same as Printed Circuit Board. It's a term more popular a long time ago. OK, I placed the order for a hopefully matching PCB. Since it was apparently manufactured by Foxconn, the same high volume company that makes the Apple iPhones and iPads, I assume their processes are very standardized. So maybe I have a better than even chance to get perfect replacement for my PCB. If not, I just return it for a refund. Because the component leads are so tiny and tightly packed, I would not volunteer for any soldering fixes myself. Finding a skilled electronics repairman is also not easy. Make sure to test the drive with a non-damaged IDE master device when you get it put back together. You can also try a power-only test using a known good source of +5V and +12V, then listen for spinning sound effects. Paul |
#50
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AcomData drive problem
On 4/29/2015 9:46 PM, Paul wrote:
cameo wrote: On 4/29/2015 5:27 PM, Paul wrote: cameo wrote: On 4/29/2015 1:21 AM, Paul wrote: cameo wrote: I've found this ad that seems to be for an identical PCB to mine, though if you look the stuff in the DESCRIPTION tab, including the video clip, they also seem to be in the recovery business. So ... I'd like to hear your take on it. http://www.donordrives.com/wd800bb-00fja0-2061-001130-300-ad-wd-ide-3-5-pcb.html?gclid=CPfauqa5msUCFdSTfgod_TQAYQ There goes another long link. ;-) Well, I don't work for WDC, so I don't know their exact practice. I try to view these things in terms of the "necessity" of doing things a certain way. AFAIK, the controller only contains bootstrap code. That bootstrap must be able to operate the arm, the read channels, well enough to read out the service area. Then, the code in the service area can take over. On the one hand, you have a couple of identifying numbers for the PCBA (PCB and assembled set of components). Such could include a particular instance of firmware. If we got two boards with the same identifying numbers, one would hope that the identifiers are enough for an employee to match a PCBA to a disk drive. I could understand, if we were mixing the wrong PCBA from the beginning of the production run, maybe there could be some justification for mixing and matching bootstraps with PCBAs. Swapping chips, using a JTAG header or a bed of nails, to reprogram the hardware. I thought, based on the 12 character identifier on some of these chips, that the code loaded in them was write-once (ROM mask maybe). While they could be EEPROM, if they were EEPROM based, I would have expected to "read more tales" of people screwing with that aspect of the drive. So while on the one hand, I want to believe that donordrives has my best interests at heart, that they're just angling for a more expensive (data-recovery-like) service charge. Who knows whether they changed anything or not ? It makes no sense to "wed" the HDA and the PCB to one another. Like exchange keys. It would be important for the PCBA to know how to operate the electromechanical items inside the HDA. Maybe there could be a production change requiring a difference to be programmed into a PCB. But I would think for a high-volume company, it would be insanity to be doing this sort of thing all the time. If I had to do what you're doing, I would have to be content matching the numbers, and taking my chances. I tend to lean to that direction, too. Especially now, that they wrote me back that I could return the PCB within 30 days for refund. Here is what I wrote to them: ------------ I am interested in buying the WD800BB-00FJA0 PCB from you to replace the identical, but defunct PCB on my 80GB WD hard drive. Your Web link is detailed enough for me to guess that this PCB might work with my HD without any additional fix, but I am still held back by the fact that the above link does not show the more important component side of the PCB that would show me that all the chips on it are also identical to those on my old PCB. Could you, please, include a photo of the other side, too, or at least send it to me as an email attachment? I also wonder if I could return the PCB for refund if it turns out not to be a perfect match for my HD? Since my HD does not hold absolutely essential data for me, it would not be worth for me to order an expensive data retrieval service beyond just buying this replacement PCB. ----------------- This is what they replied: ------------- The main factor in determining PCB compatibility is the PWB number. As long as this matches, this product will be a compatible PCB donor. Unfortunately, I will let you know that for Western Digital PCBs a direct swap almost never works because there is a small chip with the ROM information that needs to be adapted to the new PCB. This chip contains information that is completely unique to your HDD, similar to a key for a lock, allowing your computer to correctly identify the HDD and gain access to its data. We do provide this service for $60; this price includes the cost of the PCB as well. If you are interested in sending your media for this service, please see the link below and follow the steps to complete the project request. http://outsourcedatarecovery.com/submit-service/step-1/ If you would prefer to purchase the PCB and attempt the swap yourself, we do offer full refunds for items returned within 30 days from the date of purchase. ---------------------------- The promise of refund is a good thing, though I am a bit ****ed that they are not willing to show the component side of the PCB. I might even go for that $60 deal but I have no intention to send my hard drive to them. I don't trust them that much! Oh, BTW, what is that PWB number they are referring to and what would that be in my case? Thanks again for your input. Printed Wire Board is roughly the same as Printed Circuit Board. It's a term more popular a long time ago. OK, I placed the order for a hopefully matching PCB. Since it was apparently manufactured by Foxconn, the same high volume company that makes the Apple iPhones and iPads, I assume their processes are very standardized. So maybe I have a better than even chance to get perfect replacement for my PCB. If not, I just return it for a refund. Because the component leads are so tiny and tightly packed, I would not volunteer for any soldering fixes myself. Finding a skilled electronics repairman is also not easy. Make sure to test the drive with a non-damaged IDE master device when you get it put back together. You can also try a power-only test using a known good source of +5V and +12V, then listen for spinning sound effects. Will do. |
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