Speaker noise

garyb

New member
Joined
Feb 11, 2011
Messages
1
Reaction score
0
Location
Michigan
After installing pinled score displays on my Bally "Paragon" I now have a loud hum over the speaker when its in atract mode.and when it switches to high score to date it gets louder.
When I toouch C10 on the score card I can hear (believe this or not) a radio station.
Anyone have an idea? I cleaned where the ground contacts are made on the board to the backbox, no real difference.
 
Last edited:
are you calling the score displays ...score cards? Noise is usually a fault of power supply filtering or audio lines running together with power cables....like A/C lines. I'd check the filter caps on the sound board first, as I have seen this problem before.
 
Back
Top Bottom