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Picked up an untested Punch Out PCB to convert my Playchoice 10 to Punch Out. Thankfully the pcb works but is missing blue on both monitors. The other colors are there . I pulled each color prom from the BAK board just to verify and only blue seems to be the issue . I have read many threads regarding the color proms going bad. My question is that if only blue is missing on both monitors, could it be something else besides the proms for the color blue. What are the chances that both proms for blue both are no good ? It's definitely not the monitors , the blue color is there on both monitors when my Playchoice 10 pcb is connected . Any thoughts ?
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