So I'm having some issues with 3 IIVX logic boards. I have re-capped 2 of them and one is still untouched by me. I will try to be methodical with the post...
I am doing all my testing with known working PSU, RAM and VRAM!
1. Bought as new and working. Installed and no booting at all. Did a re-cap. Now I get the startup chime, grey screen and then the Chimes of Death. No Sad Mac icon or error code diaplayed
2. Got from a friend unknown condition. Installed without any repair work. It powers on and chimes but then it goes into an endless restarting loop. Grey screen with an intermittent flicker.
3. Removed from the main computer at the studio. We use these IIVX machines to run the Harrison Series 12 NuBus cards so, needless to say, we want working Macs!
The board was removed because the computer wouldn't power on. I did the re-cap. The board powers on but no chime, black screen.
I'm at a loss. Also, I'm hesitant to do the re-cap work on board #2 (restarting loop) as it does take time and I would hate to spend it on a fruitless effort.