So I turn on one of my games today, and the coin lights don't light, and there is a hum coming from the speakers as the attract mode changes screens? Bad power supply? Or in the harness some where? Thougts?
Its a jamma conversion, played great till today... No other issues, game plays great, just the coin lights quit working? And that buzzing sound during the attract mode? A grounding issue?
Power supply tested good....
Finally figured it out....dummy me put the wrong bulbs in! They apparently where both just blown? Put 158s in INSTEAD of 555s....works fine! Odd about the humming in attract mode?
If your lamps are on the 5 volt line that can cause huming. I normally have a seperate power supply just for lighting (ie old transformers in the bottom of the cabinets) alot of times they have a 6.3 ac line on it..