Guys, are there symptoms to a bad AC line filtering device (usually found after power cord at cabinet bottom and also at the ballast for the marquee light)?
How can I test those? Is there something I can look for waveform wise on a scope (fuzz along the ac sine wave)?
In the same topic, why is there a line filter on the ballast for the marquee light when the AC coming in is already filtered via the bottom of the cabinet AC line filter?
Thanks.
How can I test those? Is there something I can look for waveform wise on a scope (fuzz along the ac sine wave)?
In the same topic, why is there a line filter on the ballast for the marquee light when the AC coming in is already filtered via the bottom of the cabinet AC line filter?
Thanks.


