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On my Midway Ms. Pacman arcade machine, when I turn it on, the very left part of the screen is near the center and then every other part of the screen is compressed into one pixel. The part that is not compressed into the one pixel is perfectly fine. The controls, sound, and game work fine.

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It sounds like the CRT is damaged. I've never seen the inside of one of those machines, but is the monitor something that could be removed and swapped out with the tube of say an old PC Monitor?

Looks like you may also want to check these guys out:

They've got a lot of info regarding this.

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You need to replace the capacitors in your screen. This isn't a hard task if you know how to wield a soldering iron. Just get a kit from Bob Roberts and make sure you discharge the CRT properly.

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Definitely not for the novice. – uncle brad Dec 30 '10 at 1:50
..The capacitors in CRT monitors store an enormous charge and can have a voltage of several thousand volts, which can last dormant for months after the screen has been unplugged. If you don't know what you're doing, messing around inside a CRT is an easy way to get yourself killed. This is probably the worst advice I have ever read on this site. -1 to you, -10 if I could. – BlueRaja - Danny Pflughoeft Aug 2 '13 at 21:26

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