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Amazing work @max1zzz and @jajan547! Would you consider open sourcing the designs and the dumped firmware?

Nice! I may go ahead and order one, never had to test for bad oscillators. I'm in Spain 🙂

Just 20 MHz.

I do see a signal on pin 3 of G1 (it seems to be oscillating around ~2-4V, I can't see the signal clearly with my oscilloscope), but can't see where it goes; from pin 3 it goes under the board to R131, and from there it seems to go to one of the pins of U21. Same story with G3 as well, I think...

Yes, I carefully poked them and they are still firmly attached. Also tried some of the other ICs near cap leakage, but none seems to be detached.

They seem fine, at least all the pins of the IC are still attached to the pads.

Doing a fast power cycle just plays the boot chime again, but still no video output. The battery is brand new, and it does output 3.6V - I also tried without a battery, but same results. I read that the Quadra 610 has on-board RAM and VRAM, so for now I'm testing it without any extra memory...

Hi all, happy New Year! I'm trying to repair a Quadra 610 that I got some time ago together with a DOS compatibility card. The PSU outputs look fine, but there were some leaked capacitors. So far I have changed all the electrolytic capacitors (10x 47µF 16V), cleaned the leakaged with isopropyl...