Date: Fri, 1 Nov 2002 08:39:51 +0000 From: barnacle <[EMAIL PROTECTED]> Subject: Re: [LIB] My Libretto 50CT cannot charge up!!!
On Friday 01 Nov 2002 1:18 am, you wrote: > Date: Fri, 1 Nov 2002 09:12:13 +0800 (CST) > From: =?big5?q?tradelink=20tradelink?= <[EMAIL PROTECTED]> > Subject: Re: [LIB] My Libretto 50CT cannot charge up!!! > > --- barnacle <[EMAIL PROTECTED]> > ���l�e�G> Date: Thu, 31 Oct 2002 22:38:39 +0000 > > > It sounds more as if the power supply is dead than > > the batteries - > > can you check the output with no load? > > But my Libretto works fine with AC adapter plug-in... > I also measure the output of my AC adapter, which is > steady 14.9X V. > > > Otherwise, there's a fuse on the motherboard - it's > > well disguised, > > a square thingie about 3mm*3mm*5mm and IIRC it's > > about 3.15A. > > Changing this is not trivial if you are unfamiliar > > with soldering > > surface mount components, but if it is blown, you > > can solder a fuse > > wire of the proper rating across it. I've done that > > in the past (on > > the screen fuse) and I believe Matt has, also. > > It seems difficult for me, but I still want to know > more details.... Would you mind to tell me more? > > > Neil > > Neil! Thanks a lot! > > Alan. > Ah. I didn't realise that the beast worked on wall power, my misunderstanding. Okay, first thing to do is download the tech manual for the lib from www.nbarnes.easynet.co.uk/libretto/li50_70ct.pdf Read, mark well, inwardly digest... It will tell you how to strip the libretto down to its last nut and bolt. You will need a set of jewellers screwdrivers (crosshead) and maybe a 00 or 000 larger crosshead screwdriver. Be cautious - it's very easy to demolish the heads of the screws by applying pressure incautiously :) Once you've done that, strip the beastie down to the motherboard. You're looking for the fuse (IIRC) very close to the battery connector - as described above - and powered off, you should be able to test it with a multimeter. If it is blown, break a glass fuse to extract the wire and solder over the ends. If that doesn't cure it, then there's probably something devastating happened in the charging circuitry - there are some interesting looking transistors around there - and I'm afraid you're on your own. (If you follow the diagnosis route in the manual you will inevitably end up with the line 'replace motherboard'. This is rarely economically viable...) Best of luck, Neil ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
