WGV2000 in Omega Race, zooms out, thoughts on my t-shooting?

ifkz

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WGV2000 in Omega Race, zooms out, thoughts on my t-shooting?

I have owned this Omega Race for 5 years, it's been a solid part of my gameroom but it has always had small issues with the monitor. Last night a problem popped up that I thought I had eliminated: The monitor will zoom out to nothingness with retrace lines appearing as it zooms out. As soon as it has zoomed out, just as quickly it will zoom back to a stable normal sized picture. A minute or two later it will start to zoom out again. I thought this was a cold solder joint on the power PCB, but I guess not.

My thought at this point is to steal the HV cage from my Asteriods Deluxe (also an WGV2000) and move it into this game. This would isolate it as either an HV cage problem or a bad HV in line diode. Good call, or not?

What I've done to this machine since I have owned it:
1. V2000 cap kit. Reflowed almost all solder points on HV & Deflection PCB. Installed some new thermal grease on a deflection component/heatsink.
2. Bob's new power brick caps installed (similar in size to Atari's Big Blue).
3. Capped the power board, reflowed all solder points.
4. Capped main PCB and sound board.
5. Gave it a new HV diode.

I have a now rare, new, HV diode if needed. Bob's been out of stock for awhile now, so I don't want to use it. I have no way of knowing if my HV is too high and that has cooked the diode, I do not have a meter that can go high enough to take a measurement.
 
Finally got a video of it. I don't know how to use youtube, so this comes from photobucket. Madness...

 
Bump, anybody got an idea here?

My only thought is to replace every component on my linear power supply and see if that helps. It seems to be a heat issue. Fine for 10 minutes and then it starts to freak out. I'll also go through and replace the fuse holders. They feel fine and the fuses meter okay, but I've seen here that bad holders can cause monitors issues in a Tempest.

I've gone over every pad on the HV unit, deflection, and linear power board so it's not a cold solder joint.
 
Did you swap HV units like you were planning on doing?

I would do that, or at least hook it up to the monitor in the AD so you know it is a monitor or game problem.
 
I just wanted to share the good news...Omega Race now has a perfectly stable image! I recently purchased a WG V2000 from a member here that was local. I rebuilt the HV unit on this new monitor, as this is where I always suspected I had a problem with my original V2000. After a contorted installation, it worked great...for about two minutes until it threw a ROM 3 error code. After pushing a socket on the board, all appears to be okay. Now to find a powerboard so I can have working coin door lights and a marquee (the 12V section is down on my board). One big step! I can now love my money pit once again :)
 
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