Ms. Pacman Cocktail Power Block Question....

Bishopx

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Okay. I have a Ms. Pacman Cocktail table. It works perfectly aside from the wavy picture caused by the neckboard sitting about 1.5" above the power block. When I open the cabinet, the picture is perfectly solid. placing a heavier cage on the power block has not changed anything. I grounded the power block. I grounded the monitor chasis. Nothing seems to work.

My question is this....
Is there a way to correct this problem without ripping out the original power block? I very much like keeping the original components in this cabinet but if there is no other way, I will do what needs to be done.
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opening?

When you say open the cabinet, you mean just lift the top or do you take out the monitor to increase the distance from the power supply. Radio interference or heat?
 
My Ms Pac cocktail has a slight, I mean slight, wave too. I think it could be the broken up width coil that's on life support right now, which I'll replace one of these days.

My neck board too sits close to the PS. Nothing you can do about that of course, but I can see in your pics, you have the bracing for the metal plate. Your entire brick also looks very different from mine. I too tried a piece of metal above my PS and it did not change any thing. I think this issue was a bigger one in the uprights?

I'll be watching this thread to see what others say.

Your fuse holder looks original though and that can cause weird things to happen.

Here's mine, looks very different from yours...
 

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I've cleaned the contacts on the fuse holders. They are spotless. The resistance is minimal.
 
Are you sure. It's the power that causing your issues?

Here are somethings you may want to try.

Try removing the speaker in your machine and see if the distortions go away.
If they do go find an "ALNICO" speaker.

You may want to put some ferrite cores around the wires to filter out the noise.

Is your power supply grounded? Look at the power cord and make sure the ground part of that plug is not snipped off.

You can twist the output of the transformers to cancel the noise coming from the wires.

Or you can build a new power brick from the galaga Power supply I gave you.

Or I can drive up and fix it for you.
 
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