Help needed repairing Radeon 9250 PCI \ VOGONS

Help needed repairing Radeon 9250 PCI

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First post, by appiah4

Posted on 2021-12-24, 16:01

appiah4 Offline

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I had this thing in my stash for quite a while now. It's a useful card for me, fairly fast for PCI, but this specimen does not work. The most obvious physical issue I see is a missing SMD component near one of the RAM chips.

The attachment Radeon 9250 PCI Missing SMD.jpg is no longer available

This looks like it should be a capacitor. Alas, based on this picture of an undamaged board, it looks like it's a capacitor for sure..

The attachment Radeon 9250 PCI.jpg is no longer available

So.. Is this a bypass/filter cap? Can I get away with just using 100nF here blindly? Any suggestions?

Reply 1 of 4, by Jasin Natael

Posted on 2021-12-24, 16:19

Jasin Natael Offline

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I have one of these cards. I think mine is a Diamond, I remember that is has a red PCB and active cooling. I will try and remember to look at it and see if is different or same when I get home. If i can find it.
I can't much help with the specifics of values of caps etc as I am not that learned as many of the members here.

Reply 2 of 4, by ChrisK

Posted on 2021-12-25, 13:44

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I also have this card but can have a look not before end of next week...
Comparing the layout around the other RAMs it is (was) a cap.
100nF is fine for a decoupling.
However, I doubt this will be the reason for the card not working. It should run even without it.

RetroPC: K6-III+/400ATZ @6x83@1.7V / CT-5SIM / 2x 64M SDR / 40G HDD / RIVA TNT / V2 SLI / CT4520
ModernPC: Phenom II 910e @ 3GHz / ALiveDual-eSATA2 / 4x 2GB DDR-II / 512G SSD / 750G HDD / RX470

Reply 3 of 4, by appiah4

Posted on 2022-01-25, 21:47

appiah4 Offline

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I replaced the broken cap with a 100nF 16V 0805 and the card now POSTs 😀 Thanks.

Reply 4 of 4, by ChrisK

Posted on 2022-01-30, 12:14

ChrisK Offline

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That's great!

RetroPC: K6-III+/400ATZ @6x83@1.7V / CT-5SIM / 2x 64M SDR / 40G HDD / RIVA TNT / V2 SLI / CT4520
ModernPC: Phenom II 910e @ 3GHz / ALiveDual-eSATA2 / 4x 2GB DDR-II / 512G SSD / 750G HDD / RX470

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