I actually got it to post tonight! I looked a little more closely at an area that had surface corrosion and tested the via to pad for R38 and realized the trace had somehow been corroded off so it wasn't making a connection. I filled that via w/ solder from the other side of the board and jumped to the pad of R38 and my WinXP test machine found the card right away and it outputted fine! Will be testing some games in Win 98 now then deal with these squeaky fans.
Beiträge von ShadowofBob
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I've verified the board has 2.8V 3.3V, 5V, and 12V at various points/components from info on this vogons thread: https://www.vogons.org/viewtopic.php?f=63&t=59889&start=20 I'm waiting on a PCI video card to arrive to use to try to flash the BIOS of the 5500 in the rare chance that is somehow causing the issue, if that doesn't fix it I'll likely have to send the card to oscar for BGA rework or a replacement VSA100.
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Ok, among my v5 5500 I have this 2100 series.
I can measure the output voltage, can this value help you?
To measure the capacitor I should unsolder it ...
Do you know another method?
Unfortunately no.
You could use an ESR meter to get the ESR value, but I don't have an ESR meter to compare to my own. This also won't get the value of the capacitor, just if it's good. Only way to get the capacitor rating is to unsolder from the circuit. I understand if you don't want to do this on a good card. Happy to wait until someone else can verify. -
Sorry, I've attached images of the front and rear in case there is something else obviously wrong that I missed. I went ahead and tried a 100nf for C540 so that is why it's populated in this shot. No change to the functionality of the card w/ this repair. Would be nice to confirm the rating and correct as needed. I've replaced all the SMD caps on the front and tested post install. All have proper grounding and voltage. Have been unable to find any other obvious shorts so far. The only thing of slight concern is minor corrosion of C548 and C554 on the back of the card and U4, R37, C33, R38, and R39 on the front. I tested them and they still have continuity and voltage though.
Front:
https://i.imgur.com/zm6tIhT.jpg
Back:
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I picked up a non working V5 5500 on ebay with the intent of repairing it. The fans spin, but the card isn't recognized by the motherboard(in this case if reverts back to internal video to boot). I inspected the back and noticed that C540 was ripped off of the board. I'm hoping this is why it isn't recognized, but won't hold my breath. Unfortunately this is missing from the list of know capacitor and resistor values.
Does anyone know or can measure what the capacitor installed at C540 is?
C548 and C554 would also be useful as mine looked like there was corrosion on them so I may try to replace them if they are out of spec.
