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Where to get a TPC8203 (burn't out ic from T23)?

T20-T23 Series and T30. NOT for T25-Retro.
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cheeky2
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Joined: Thu Dec 24, 2009 7:36 pm
Location: London, UK

Where to get a TPC8203 (burn't out ic from T23)?

#1 Post by cheeky2 » Sun Mar 07, 2010 6:25 pm

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:
http://forum.thinkpads.com/viewtopic.php?t=37956

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

rave
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Location: San Jose, Ca.

Re: Where to get a TPC8203 (burn't out ic from T23)?

#2 Post by rave » Sun Mar 07, 2010 7:34 pm

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

TOSHIBA Field Effect Transistor Silicon N Channel MOS Type
T61: 6465-CTO
A31: 2652-Q3U
A31: 2652-D3U
A31P: 2653-R5U
A30P: 2653-65U
T23: 2647-HLU
T20: 2647-61U
A31: 2652-C4U WORK IN PROGRESS

cheeky2
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Location: London, UK

Re: Where to get a TPC8203 (burn't out ic from T23)?

#3 Post by cheeky2 » Mon Mar 08, 2010 9:11 pm

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?

RealBlackStuff
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Re: Where to get a TPC8203 (burn't out ic from T23)?

#4 Post by RealBlackStuff » Mon Mar 08, 2010 10:02 pm

Try eBay for a Parts/Repair/As-Is T23 mobo.
Lovely day for a Guinness! (The Real Black Stuff)
Lenovo: X240, X250, T440p, T480, M900 Tiny.

PS: the old Boardroom website is still available on the Wayback Machine
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jgrosjean
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Location: Hancock, NH, USA

Re: Where to get a TPC8203 (burn't out ic from T23)?

#5 Post by jgrosjean » Sat Mar 03, 2012 8:12 pm

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.

cheeky2
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Location: London, UK

Re: Where to get a TPC8203 (burn't out ic from T23)?

#6 Post by cheeky2 » Sun Mar 04, 2012 4:36 am

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!

rkawakami
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Re: Where to get a TPC8203 (burn't out ic from T23)?

#7 Post by rkawakami » Sun Mar 04, 2012 6:02 am

It probably looked like this: http://www.kawakami-ca.com/ibm_t2x/let.jpg (what's in the black circle)
Ray Kawakami
X22 X24 X31 X41 X41T X60 X60s X61 X61s X200 X200s X300 X301 Z60m Z61t Z61p 560 560Z 600 600E 600X T21 T22 T23 T41 T60p T410 T420 T520 W500 W520 R50 A21p A22p A31 A31p
NOTE: All links to PC-Doctor software hosted by me are dead. Files removed 8/28/12 by manufacturer's demand.

cheeky2
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Location: London, UK

Re: Where to get a TPC8203 (burn't out ic from T23)?

#8 Post by cheeky2 » Sun Mar 04, 2012 6:09 am

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

jgrosjean
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Joined: Sat Mar 03, 2012 7:57 pm
Location: Hancock, NH, USA

Re: Where to get a TPC8203 (burn't out ic from T23)?

#9 Post by jgrosjean » Sat Mar 24, 2012 8:12 pm

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.

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