ShaneC
New member
Recently got an '85 Comet. It has a low frequency audio hum in the background. Any ideas on how to remedy this?
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Well darn, does yours have volume issues? The knob that is supposed to control the volume in mine is useless. Does nothing and it's stuck on LOUD.
System 11s in general have a significant hum.
All I can say is wow! I capped my power supply in my Comet last night. Plugged the board back in today, turned it on, and thought well shit.. I didn't hear anything but silence. Thought oh well I killed that board. Started a game to play it and it sounds amazing! It's truly quiet as a mouse now! It was making all kinda hum sounds before. They would go in and out and some kept humming the entire time. I did every cap in the power supply along with reflowed all the connectors while I was there. Seems my flippers are much stronger as well. Always nice to work on a game and the results are better then expected! So yea cap those power supply's and do them all! There is a bunch on that board. For the record they all tested good as well on the bench with my cap tester!
I take it you bought all the caps off of mouser or is there a cap kit available?
Thanks! Great Plains is out but I'm on the notify list.