If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Location of CMOS Battery in HP Pavilion N3390 Laptop
Hi,
This HP Pavilion N3390 laptop is over 10 years old. I have replaced the RTC/CMOS batteries on some of my old laptops, and it is a big help if I know in advance the location of that battery. I failed to find the location of this battery on the web for my HP Pavilion N3390 laptop. Note: I was ripped off at www.eservicemanual.info when I was misled with their claim to have a service manual. What I paid for turned out to be a user manual (I already have). Of course there is no information on the CMOS battery in the user manual. I will be very grateful to anyone who can tell me the location of the CMOS battery. Thank You in advance, John |
Ads |
#3
|
|||
|
|||
Location of CMOS Battery in HP Pavilion N3390 Laptop
"jaugustine" wrote:
Hi, This HP Pavilion N3390 laptop is over 10 years old. I have replaced the RTC/CMOS batteries on some of my old laptops, and it is a big help if I know in advance the location of that battery. I failed to find the location of this battery on the web for my HP Pavilion N3390 laptop. Note: I was ripped off at www.eservicemanual.info when I was misled with their claim to have a service manual. What I paid for turned out to be a user manual (I already have). Of course there is no information on the CMOS battery in the user manual. I will be very grateful to anyone who can tell me the location of the CMOS battery. Thank You in advance, John Digging for different answers than you already got for the SAME question you started 5 days ago in another thread in the windowsxp.general group (instead of posting there to continue the discussion)? Just because you don't want to dismantle the laptop get underneath the mobo (well, on top of it since the access panels are on the bottom of the case) doesn't obviate that's what you have to do. Sometimes a laptop maker will provide service manuals. These tell you how to dismantle the case and remove components, like how to replace the keyboard (the disassembly for which is what you might have to go through to get at the other side of the mobo). Again, Dell should be able to tell you if they used a [coin cell] battery, capacitor, separate IC, or RTC with in-built capacitor to supply power to CMOS to maintain the settings saved there. http://h10025.www1.hp.com/ewfrf/wc/m...roduc t=61774 Didn't see any service manuals there. Maybe you could call Dell support and ask for the "Maintenance and Service Manual" for this model. They might charge for shipping and maybe even some for the manual itself; however, you could check before ordering if it does indeed describe and illustrate the servicing procedures for that model (and isn't just another copy of the "user manual" that comes with the product). Forum: http://h10025.www1.hp.com/ewfrf/wc/d...&product=61774 has a link to "Adding/Replacing Hardware" but the couple articles there show access through the bottom plates (the normal access methods for user upgrades). You might something over in the HP forums: http://h30434.www3.hp.com/t5/Hardwar.../bd-p/Upgrades A service manual for a different netbook at: http://h30434.www3.hp.com/t5/Hardwar...ght/true#M8621 page 6-51, shows the CMOS battery is on the top of the mobo (not on the bottom side using the access panels) and sits vertically in a slot in the plastic of the case. In fact, it looks like you don't just swap in a CR2032 common coin cell battery but have to get one with leads and connector attached to it. I suppose you could do some soldering to use a coin cell you buy in a store. The service manual for the dv6000 at http://h10032.www1.hp.com/ctg/Manual/c01035677.pdf shows the CMOS battery is under the memory access plate. Maybe you're looking for a coin cell slid into a metal retaining bracket, like in desktops; however, this also shows a replacement that has soldered leads and a connector so, if this was the case for you, then maybe you wouldn't recognize it as the CMOS battery. Without you disassembling the case to go look for the CMOS battery, I suspect Dell is your best source on where to find it, how to dismantle to get at it, and what you need to replace it (might not be a simple swap of a coin cell from the local store). It's also possible there is no CMOS "battery" that you see. They could use a capacitor to do the same thing: provide voltage when the unit is otherwise powered off. The "battery" may be a soldered-on IC on the mobo: http://www.cymbet.com/products/enerc...-batteries.php or the battery/capacitor might be inside the RTC chip. That means there is no user-replaceable battery for CMOS. |
Thread Tools | |
Display Modes | |
|
|