Just installed a new Rotten Dog Power Supply in an F14. Power works perfect, but the left speaker has a constant hum to it now. It's loud enough to be irritating, this was not the case prior to the install.
Quoted from Dr_of_Style:
Make sure every board is securely screwed down to the back box ground plane.
BTW...the old WMS PS is far superior to the RD PS. You should consider repairing your old PS. The PinWiki outlines how, or I can fix it for you.
Chris Hibler - CARGPB #31
http://www.PinWiki.com - The Place to go for Pinball Repair Info
Access to a scope? You may find the 12v supply (which drives the sound amps) to be noisy when using the rottendog board.
I had a bad experience with loud speaker hum on System 11 games with new Rottendog boards. The hum was not affected by the volume pot at all. I ended fixing my original Williams power supply and the hum was reduced greatly back to normal.
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