Centipede weird screen

GenJackson

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Anybody got any ideas? I attached a pic. I can still tell by the sound that the game is going on. I can hear it take quarters. I can control and vaguely see the guy at the bottom of the screen.
 

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Just looked at a few of the other threads and saw how detailed the checking on my end needs to be. Is this a case were I need to do voltage checking, or is this a monitor issue. I just watched the video on arcade repair vids how to check the voltage, so I can do whatever anybody thinks is best.
 
The pix is too small, so check the monitor B+ first, then do a cap kit. Dried out caps in the vert def circuit can cause a small pix. Oh....and its out of H sync. Check to make sure H sync is making it to the monitor board then adjust the H freq to clear it up.
 
We need a little bit more info to assist you in your troubleshooting. Was the game ever working? If so, what was it doing prior to this?

If not, do you have any other games in your collection?

Can you hear any of the game sounds? Do the P1 and P2 lights blink when you coin up?
 
Read his original post....he said there's game sounds. Its a monitor problem.

OIC - OK then...monitor issue.

Has the monitor ever worked? If so, what's happened since? Game moved? Stored? Bumped? Transported? Nothing?

Start with some pictures of the monitor's circuit boards, unless you already know what type of monitor chassis you have, then just tell us.
 
Your horizontal hold/horizontal frequency is off. Also, all I'm seeing is green....and the image looks "shrunk". Start with a cap kit.

Edward
 
Is this something that just started happening, or a new machine which may have been modified? If a new machine, have you verified it's a Centipede board (Millipede/Centipede have different pinouts). Sorta looks like the wiring to the monitor is bunged.

...just some random guesses as to the cause.
 
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