Just recently, my PRO-111FD developed the dreaded 8 blue blinks which would happen when changing input source. It also happens occasionally when watching OTA TV
but quite rare. While the blue light blinking 8 blinks pattern, pressing display gives 6 orange blinks. When the problem happens, I'd have to wait 10 minutes sometimes longer
before turning the TV off/on for it to work again. If I change input, it happens again.
I found a copy of the PDP-5020FD Service Manual and according to PD/SD diagnostic table, 8 blue and 5 orange pattern means "Main IIC communication with main VDEC".
I think the VDEC is on main board so this would not be same as the power regulator fix for the IO_AUDIO assembly floating out there.
Anyone got this problem before or know of a fix? I'd appreciate any recommendation you can give. Thanks.