Nvidia P83 Repair \ VOGONS

Nvidia P83 Repair

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First post, by douglar

Posted on 2026-03-03, 17:00

douglar Offline

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Posts: 2738
Joined: 2019-11-04, 15:37
Location: Ohio, USA

I recently bought a quadro4 900 xgl, essentially a 4600ti, that was in worse shape than I thought.

https://theretroweb.com/expansioncards/s/nvid … quadro4-900-xgl

I knew that the puffy 470uf caps on the front likely need replaced, but there are a number of SMD components on the back that appear to be missing that surprised me--

The attachment P83 Repair Back Top Left.jpg is no longer available

The attachment P83 Repair Back Top Center.jpg is no longer available

The attachment P83 Repair Back Center.jpg is no longer available

The attachment P83 Repair Back Bottom Center.jpg is no longer available

Even if I fix it up, what are the odds that the GPU is burned out? Is it safe applying power to find out?

Here are some links to similar cards--
https://theretroweb.com/expansioncard/image/g … 4d474082282.jpg
https://theretroweb.com/expansioncard/image/b … 6e992203630.jpg
https://theretroweb.com/expansioncard/image/i … ec622780488.jpg

Any help guessing what parts to use would be appreciated. I could probably pull many of these from my rack of donor win modems.

Reply 1 of 2, by tehsiggi

Posted on 2026-03-03, 17:16

tehsiggi Offline

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Posts: 481
Joined: 2025-04-14, 13:37
Location: Germany

Here you go. The PCB is the same as for the Ti4600.

You should be able to find all parts in there.

To check if the GPU is shorted, just measure the main rails according to the schematic. Let me know if you need any additional guidance.

AGP Card Real Power Consumption
AGP Power monitor - diagnostic hardware tool
Graphics card repair collection

Reply 2 of 2, by douglar

Posted on 2026-03-04, 00:50

douglar Offline

Rank l33t

Rank: l33t
Posts: 2738
Joined: 2019-11-04, 15:37
Location: Ohio, USA

tehsiggi wrote on 2026-03-03, 17:16:

Here you go. The PCB is the same as for the Ti4600.

You should be able to find all parts in there.

To check if the GPU is shorted, just measure the main rails according to the schematic. Let me know if you need any additional guidance.

Thanks much! That’s exactly what i needed.

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