DATA EAST Secret Service sound

robgest

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Feb 11, 2010
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Did all the grounds and connections. No, sound except a very load hum that changes tones with the lights. +5 a little low, +12 in the 10 area and -12 in the 13v range. Ideas or anyone have a used board?
 
A hum that changes tone with the lights? That's a ground problem or short to ground by something FOR SURE...somewhere.

And have you made sure the volume pot isn't flaky?
 
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