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One of my TRX boards died, and my repair guy couldn't get it working. Now I'm looking for a working replacement. If I don't find a TRX board, I'll settle for any of the other Seattle based games from Atari or Midway and convert the board (California Speed, Mace, Blitz/99/2000, Hyperdrive...

Thinking about setting up an atari test bench. Is there an optimal ARII choice that covers all or most of the ARII games? I've seen the elektronforge ARII page but I'm wondering if, for example, an -02 would work for -01 games, or if there are differences in the +5v and audio that would make the...

Continuing a bit from the ill-named thread https://forums.arcade-museum.com/threads/sega-harley-davidson-la-riders-potentiometer-replacement.535941/, I'm looking at repairing/replacing my rosta unit that handles centering of the handlebars in the Harley Davidson game because the rubber is all...

I'm going to see if I can find a repair service that will be able to repair my board that no longer boots, but figured if someone has a working board they can part with, that might be the better way to go. It has to be a 200MHz Seattle board, and Vapor TRX, Mace, and Hyperdrive are the 3...

I recently got a Battletoads board fixed and figured since I don't have another 3 player cab, doubling up with Pig Out would work well since they both are 2 button 3 player games. Only problem is Pig Out isn't jamma. So I had to build a jamma harness for it (fully reversible). Then I had to find...

Been doing some work on my Pig Out including some monitor work and I haven't been able to figure out this jitter. It's only been happening rarely while I've been working on it in my shop. I believe I discovered tonight that it's when warm. Once I thought of that, I closed up the cab and ran it...

I'm not sure how much general interest there would be in this, but with my recent update to my Sea Wolf test ROM, I decided I'd like to have the ability to run the test ROM without pulling my game out and swapping ROM chips. Plus this is the first PCB I've made since I last made one...

Recapping an EZ20 and it has a 2.2uf 250v cap for C467, where a 1uf 160v appears to be the norm. This chassis has been recapped at some point in its lifetime, so I'm guessing it's just the wrong cap there. But before I replace it with a 1uf, just thought I'd put this out there in case someone...

Quick background: My joust had been randomly resetting a few years ago so I moved it into my shop and periodically tried to do a little troubleshooting, but didn't get anywhere. So it sat until I got my fcawth fpga catbox a few days ago, and I immediately started in on the Joust again. I...

Probably a longshot but... My Do! panel is hacked and I'm tired of living with it when the rest of the cab is in super sweet condition. I'm considering asking a local shop to bend me a new panel and weld the studs but before I do that, might as well see if someone happens to have a nice...

I have about a half dozen of these in my stash of chips. I can't find info on them. Wondering if they're worth hanging onto.

Just did a cap kit on a D9800 that was sitting for a year and it's looking good now, but I hear an occasional clicking sound that sounds almost like a relay. When a click occurs, there's a slight fraction of a second glitch to the picture. When it's not clicking the picture looks great. I turned...

The game is partially working but I don't think self test works right (I don't yet have a functional speaker to hear tones but it doesn't seem to ever get to a point where something displays on screen - spot killer during self test). The surface of the moon doesn't display until you get into the...

Just got a LL and it's missing the speaker. Anyone know what impedance it uses? And anyone know of a good replacement? Or is a generic speaker of the right size and impedance what I'll need to do? I'd like to see if I can get a temporary one in there for now, and next I want to see if I can...

We're quite possibly going to do a cross-country move. We have friends that moved to the same area we're considering and they saved a ton by moving their stuff via train. So I'm trying to figure out what the pros and cons would be of moving my collection via train given how expensive moving a...

I have an old chassis from a monitor with a dead tube and just got another non-working D9200. Hooked up the old chassis and I only get "no signal" whether I input CGA, EGA, or VGA, so the old menu factory reset trick won't work. I've tried 2 input boards, although it's possible both are bad. I...

My spy hunter's video went out, though I can still hear attract mode. The screen is mostly black (appears purple-ish in the picture but that's really just the red needing to be turned down on the monitor), but with bright white horizontal lines at the top and at the bottom (monitor in vertical...

My z80 sound cpu seems to be booting - I get activity on all the lines you'd suspect (address, data, etc). It's watchdogging, so I pulled cr4 to disable the watchdog. I'm still getting the garbage screen even though the cpu is no longer resetting. I've checked the 2 roms (7f, 7h) with my GQ4x...

I have a couple Vapor TRX's and one hasn't been booting lately. The symptoms are the 3 LED's in the middle of the board blink indefinitely, and I get a black screen. Does anyone know what that blinking suggests? I was messing around last night and got it to start booting by removing the battery...

atari optical board - replacing just the transmitters and receivers? I have a bunch of bad optical boards that I'd like to repair. While the repros aren't that expensive, the price adds up when you have a bunch. I know the individual transmitters and receivers can be replaced by removing them...