My IBM T23 was not charging been reading up this evening about the common problems so have dismantled the main pcb to check out inductors fuses etc.
After finally getting the board out from the laptop the underside of the board have found a burn't out ic TPC8203
I have downloaded the spec of the ic
below is a link of the burn't out ic is
http://img.villagephotos.com/p/2010-2/1 ... pc8203.jpg

The location of the ic is located at G4 on the underside of the board the link of the pcb board is here:
viewtopic.php?t=37956

Where can i get one of these TPC8203 ics any help would be appreciated
Thanks in advance

http://octopart.com/parts/search?q=TPC8203&js=on

TOSHIBA Field Effect Transistor Silicon N Channel MOS Type

Thanks for the link unfortunatly they are located in the USA and i am in the UK and the minimuim order is $25 plus shipping!
Anyone out there know of any UK based suppliers of these chips?

Try eBay for a Parts/Repair/As-Is T23 mobo.

I came across this while working on my T30. Maybe you have already fixed yours. The IC on the board is TPC8203, but the Fairchild FDS6990A is the same and is available from DigiKey and Newark.
How did you determine that it was burnt out? I am afraid to run the charger with the board out of the case.

The ic had blown its top! The original pictures i posted have long gone which showed the ic fried. I replaced the ic from a dead motherboard that came my way from a bulk load of laptop parts i bought a while back. It was successfully repaired and the laptop sold.

Why be fearful of running the motherboard outside the case of the laptop for testing purposes!! That doesn't make sense to me as it saves a lot of time particularly if there is more than one issue with the motherboard that you haven't identified. What you frightened of? just insulate everything from any metal contact with the board ie paper cardboard plastic its not rocket science....

Crikey this was a while since the original post!

It probably looked like this: http://www.kawakami-ca.com/ibm_t2x/let.jpg (what's in the black circle)

Yes pretty much A nice clear picture i must say
Have a good weekend

I replaced U42 (ADP3806) and Q4 (FDS6990A). I used the Fairchild FDS6990A part for Q4 and got the ADP3806 from a parts supplied in Hong Kong. The price for the AD part was only about $4.00 each and the Fairchild part came from Mouser Electronics. The battery charger works fine now.