Needed - a source for Wells Gardner K4600 VR702 Focus Control replacement - Part#204X3901-125

[sgjii]

I have, one each, original PacMan and Galaga cabinets that were untested and have sat in my storage for 10+ years. I started with the PacMan unit and cleaned/re-capped the monitor. I added an upgraded, modern power supply and PCB edge connector set I purchased. The unit came to life. I had horizontal and vertical adjustment concerns but those came quickly into reasonable with some adjustments. I then let the unit burn in for about 30minutes and went to the Monitor B+ adjustment and it was 127.7V so I left it alone. I then went to better tweaking for vertical, horizontal, screen, black level, etc. The picture came into a very nice and clear picture. As I played and let the unit burn in, I noticed periodic and increasing screen jitter. I rechecked my work, looked for loose connections or a missed solder joint re-flow, etc. but could not come to a solution until I turned the remote focus control. It seemed knotchy in turning and picture results. Some settings would loose the jitter but focus was off too far. It was a sealed pot but I managed to get some Deoxit D5 down around the shaft and the pot smoothed out in physical operation but lost ALL focus adjustment effects and I was left with a stable but blurry picture. I then robbed the focus pot from the Galaga monitor and all was right. Great picture, clear focus, good geometry, etc. Very pleased with the outcome but now I can't work on my Galaga cabinet because all I have left is a bad focus control...

Internet searches have produced no results for me. I found the part number in the Wells Gardner manual but no joy in finding a replacement. I found some specs at 25MOhms and 10kV, so I tried the usual Digikey, Mouser, Newark parts houses for something generic that met specs, but nothing that fits the bill.

I have seen some, ship from China, flybacks that claim to fit the k4600 and they look like they have screen and focus controls on them. Anybody tried one theses? ***On closer inspection, these appear to be PCB mount and I don't think the data is correct for them ever fitting a K4600 remote mounted flyback.

Any advice or suggestions would be appreciated.

 

[DuffCon]

paging @security0001

 

[security0001]

paging @security0001

i have never been able to find them either. maybe the OP should try and take that pot apart and clean it well and dry it and see if they can get it working again and if not the OP isn't out anything.

 

[behrmr]

I'm sure you'll find in collector circles, or here, a parts K4600 you can rob the flyback from.