Date: Sat, 02 Nov 2002 17:41:40 +0800 From: Raymond <[EMAIL PROTECTED]> Subject: Re: [LIB] My Libretto 50CT cannot charge up!!!
At 02:40 AM 2/11/2002 -0700, you wrote:
Date: Sat, 2 Nov 2002 17:32:56 +0800 (CST) From: =?big5?q?tradelink=20tradelink?= <[EMAIL PROTECTED]> Subject: Re: [LIB] My Libretto 50CT cannot charge up!!! --- Raymond <[EMAIL PROTECTED]> ªº¶l¥ó¤º®e¡G> > I would *carefully* inspect the rest of that > motherboard for signs of water > damage or similar deposits. If in doubt, take photos
<snip>
> would be that anything that was energised by that > backup battery, including > the BIOS and CPU, may well have suffered some form > of damage. I haven't found any similar corrosion other than the part I circled after careful inspection on my motherboard. Thanks god.
Good to hear ...
The backup battery itself isn't *terribly* easy to find but, if I recall correctly, the backup battery being missing altogether shouldn't affect the ability for the main pack to charge (which is, I gather, the main problem you're experiencing?). That backup battery is really only needed when neither the main battery nor external power is available, you can in fact remove it altogether and still work fine (except when you remove the main pack without the external power connected you lose clock and BIOS settings).> This may also explain the issues you're having with > charging, if the pack > wasn't yanked out *quite* fast enough it may well be > that part of the > battery circuitry may also be damaged (hence it may > well be possible that > the fuse you've circled may be open, check it with > an ohmmeter first though). I have also tested the fuse which I circled in red, it is close. May be I should insert a new backup battery to see if it works or not. However, is it easy to find this kind of backup battery?
You might want to measure the voltage of the main battery pack and see if you can get 8-9 volts across it's terminals, assuming it was charged at SOME point (I can't remember which terminals are + and - but it's in that manual). I got about 9 volts out of a brand new straight-from-the-factory battery pack for instance. The battery pack itself has a fuse which may also have opened. If that's the case, you may be able to salvage it by replacing that fuse. Getting that pack apart IS tricky but possible, just be very careful as the circuit board inside the battery is VERY thin.
Alternatively, if you know someone else with a libretto you can try swapping battery packs ... or pick one up on eBay (but that might start getting expensive, especially if the battery management circuit inside the libretto itself has been damaged).
- Raymond
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