Testing an AC Line filter

edelgiud

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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.
 
Bump. Anybody know if they just go bad at least or they can be a weak/leaky type component that can still work but exhibit some problems in game?
 
I've wondered too of a line filter and symptoms of it going bad...
 
How about hook your X10 control module into an adjoining socket and start sending RF pulses all over the place.

Then use your scope to view both the input and the output sides of the filter.
 
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)?

Yes. When you flip on the power switch, get a bright flash and a loud pop, and all the overhead lights go out because it tripped the breaker.

Right OZ? ;)

(The AC line filter on my dedicated Star Trek: SOS did this. One of the wires coming out of the filter had rubbed against the opening in the housing so much that the rubber coating had worn through and the wire shorted against the housing.)
 
The point of my thread here was to learn. Knowledge is what keeps me going on this hobby (not the fact that I am trying to store these huge hunk of junk heavy machines).

AC Line filters hardly ever go bad from what I have seen in my 25 machine collection. SanTe's machine was an exception (and a clearly visible wire cut).
Ok, I was hoping for a response from a tech who knows the oscilliscope pattern or something in which I could analyse the output....

Thanks anyway.
 
AC Line filters hardly ever go bad from what I have seen in my 25 machine collection. SanTe's machine was an exception (and a clearly visible wire cut).
Ok, I was hoping for a response from a tech who knows the oscilliscope pattern or something in which I could analyse the output....

Thanks anyway.

You are over thinking this pretty simple device. It isn't even required really.
 
I'm new to these arcade games. Could someone post a pic of this "line filter". Is it part of the power supply or something separate? Just curious.
 
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