feipoa wrote:What voltages were they outputting on the card in its powered-up state? I'm wondering if just the traces on the board are bad. I had these type of caps go bad on my Mac SE/30. They ate up a bunch of traces, which I had to rewire.
Yes, I have some old mac classic logic boards that need re-caps too.
On one of the Voodoo cards 2 caps went bad and corroded the PCB and 4 pads. I still need to repair. Waiting for 1.4mm copper foil to rebuild pads.
On the other Voodoo the two regulators are bad for sure. Some diodes are reading bad but I think it is because of the regulators.
I am going to take it one step at a time.
As for the readings, I just compared the readings from the NEW components to the old ones on the Voodoo's with a meter.
Check each leg of the regulators and compare readings.
Also check each cap and diodes and traces.
See photo above.