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I'm trying to source those little plastic thingies (standoffs? spacers?) that lock themselves into holes in the tray, then you screw the monitor PCB into them. K7000's have these; so does the 15" Electrohome G05 in the Asteroids Deluxe cabaret I'm working on. Any ideas? Has anyone 3D-printed...

On the bench: 19" Tovis MTG-1901. I have HV and heater glow but no picture, i.e., no "raster." B+ is steady at 123V. Turning up "screen" on the flyback does nothing; brightness, contrast, and color pots do nothing; screen remains dark. Grounding the collectors of the big neck board transistors...

I have a Tempest board that works perfectly in cabinet A. When I put it in cabinet B (a restoration project), it fails to boot. The A/R II board in cabinet B has been tested in cabinet A, where it works fine. All fuses in cabinet B are intact. Confirmed that 5V is present on the board. Pushing...

I have a K4900 chassis that looks pretty good except for one thing -- near the left and right edges, vertical lines aren't straight. They're wavy, or "kinked" in the middle. See attached photo. (I adjusted the pic to make the lines stand out; that's why the black background is blue.) It's almost...

Up for grabs here is one mighty fine Gauntlet II PCB. Recently serviced; no known issues. $400 including shipping to lower 48.

Need a conversion board (original or repro) to plug a MH board into a Tempest cabinet. Who's got one?

Of all the Space Duel cabinets I have come across over the last 30 years, this one is by far the nicest. I would give it a solid "A" except for some wear along the bottom edges -- not water damage, just a little roughness. When I acquired this game it had been home-use-only for decades...

Anyone have any tips on optimizing the pedal potentiometers on a Super Sprint? Mine work, but just barely -- the difference between "LO" and "HI" on all three pedals is really small, like between 0x96 and 0xA9 (only 19 positions). The game reads this limited range as "BAD." If I remove the cam...

Can anyone provide me with the binary, or a link to it, for the Zookeeper ZA19 EPROM that allows you to bypass the coin PCB?

I have here a K7201 chassis with the P760 neck board, the 10-pin fat-neck variety. I found a 19" tube it fits and got the thing fired up. Picture was too narrow left-to-right so I replaced the width cap, which was .56 uF, with one that is .33 uF. The image is still way too narrow -- in fact I'm...

Anyone know what size screws are used to mount the PCBs in Atari System 1 games? Little things, fine pitch...?

This has me stumped. I have a 25" tube that reads as perfect on the BK 490 and gives a lovely picture with a K7000 chassis. But with a Hantarex Polo chassis, weird things happen: 1. The monitor shows only red. No green, no blue. 2. Of the three cathode heaters, only the red one glows. 3. The...

Got a MTC900E here with no HV. Initially, the chassis a bad TH2 transformer. Replaced it. B+ is 117 VDC. Collector of TR10 is at 30 V; schematic says it should be 75 V. The horizontal output transistor is getting super hot after only a few seconds. It measures good out-of-circuit. R97 and...

I just installed a cap kit in this 20EZ and ended up with some kind of vertical deflection issue. See photo. I just verified that all the caps in the ArcadePartsAndRepair kit were installed correctly. B+ is dead on at 108 VDC. If it matters, VR403 (vertical centering pot) appears to be...

I just did a cap kit and tube swap on a K4900 using the original yoke on the new tube. This is the early 3-knob version of the 4900 that doesn't have the "V.DAMP" potentiometer. The picture looks excellent except for distortion (foldover?) at the top edge. I have read that foldover is an issue...

See pic. This happened after a cap kit, new flyback, HOT, VR, and a tube swap on a 19" K7000 chassis. There is a thin, stationary white line at the very left edge of the display. It's there all the time, even when the video display is blank. Also not dependent on the video source -- it does this...

Friend of mine in/around L.A. is looking to acquire a Tron. Please message me with price, location, and details.

I've been asked to help fix a Super Hang-On that, in free-play mode, always starts a game whenever it can, as if the P1 Start button were stuck closed. The P1 Start button is, in fact, okay -- when not in free-play mode, the attract mode runs and a game doesn't start unless and until you press...

I have a K4600 on which R505, the 1k potentiometer on the power regulator board, is broken. Can someone point me to a part on Mouser or Digi-Key that's a good replacement? Or maybe I don't even need a potentometer. I always see this part glued in place (i.e. can't be adjusted). The broken...

Obviously there were plenty of stinkers once the conversion craze started around 1984. But before that, in the "golden age," say 1980-83, I'm having a hard time thinking of any games that were truly bad. What am I missing? What games from this era did players (and operators) hate? And why?