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  1. 98pacecar

    What Donor Board to use for the CPS1 Multi

    Are there any hard to find parts needed to populate the audio section of a 1.5 A board? I’m sitting on 2 of them I had earmarked for the multi and hate to not use them.
  2. 98pacecar

    Monitor Test Bench Solution Help.

    Craftymech test pattern generator for anything rgb. https://craftymech.com/arcade-test-pattern-generator/ Just need an iso to power the monitor. The tpg is powered off a 9v battery.
  3. 98pacecar

    Blast City Speaker Replacement

    I’m going to have to pull the monitor in my blast anyway, so happy to be a test bed if you need one. Will give me a good reason to have Bagheera over!
  4. 98pacecar

    Toobin'

    I wish I could offer a suggestion, but I've been needing a solution for low voltage AC power myself. If anybody has a way to do it, it would open up a lot of potential repairs on older and oddball stuff.
  5. 98pacecar

    MK1 Sound Board Repair

    Finally sat down and looked at the dead sound board I got with my previous MK1 main board. Out of the gate, it had no signs of life at all. All the boards I got out of this lot had a lot of corrosion and rust, so I expected the same here. Visual inspection showed that the GAL on the board was...
  6. 98pacecar

    Cap leak cleanup - pad won’t take solder

    The fiberglass pen did the trick. Didn’t take much scrubbing either. Thanks for the reminder! Sound board still doesn’t work, but that’s another topic. Lol!
  7. 98pacecar

    Mortal Kombat 1 - DOA

    I always wondered about that possibility. The daughter board has a GAL and a crystal on it, so I assumed it was more than just protection. Admittedly, that's way out of my area of expertise so I'm likely wrong.
  8. 98pacecar

    Cap leak cleanup - pad won’t take solder

    Nah, these are through hole. I didn’t think about using my fiberglass pen. I’ll dig it out and try it tomorrow. Thanks!
  9. 98pacecar

    Cap leak cleanup - pad won’t take solder

    I’m working through a dead MK1 sound board. Pulled the 3 caps that power the amp and found some minor leaking. Cleaned it up, doused it in flux, but I can’t get the top pads to take any solder. They are fairly heavy traces, so I bumped my temp to 750 from 650, but still no luck. Any tricks to...
  10. 98pacecar

    Mortal Kombat 1 - DOA

    Speeds it up, makes it possible to juggle more, sub zero’s freeze makes the opponent levitate, reptile comes out more often. Stuff like that. It’s a cool bit of history, but not really all that great. Just hard to find since it needs a daughter board to run.
  11. 98pacecar

    Mortal Kombat 1 - DOA

    I must have missed that day in repair school!! Lol!! I hadn’t played this version in probably 20 years. I wasn’t near as excited about it as I used to be, but I think it’ll still make the cut as a keeper. Mainly just to mess with people!
  12. 98pacecar

    Mortal Kombat 1 - DOA

    Oops, misspoke in my post. I replaced the PLCC socket, not the actual chip. I found a few online, but at ~$50 a pop I didn't want to buy them. Got lucky that my chip worked, just needed a clean socket.
  13. 98pacecar

    Mortal Kombat 1 - DOA

    I had picked up a dead MK1 board a long time ago, with the intention of parting it out. It gave me a blank screen and showed no signs of activity, but it did have the Kombo board add-on so it was worth grabbing. I got bored over the weekend and started to look a bit more closely. Noticed the...
  14. 98pacecar

    Blast City General Questions

    I’ve got a blast I still need to tear into, but it has a buzzing from the monitor. I was assuming it was fly back, but maybe it could be this? Any way to tell without pulling the yoke?
  15. 98pacecar

    Raiden repair

    I suppose it’s possible the UEC-52 could be the culprit on the video. I’d drop a pm to Caius and get his opinion. His stuff is top notch and he really knows what he’s doing. I got lucky with mine. A buddy of mine had it and just wanted rid of it. Swapped it for some side art I didn’t need...
  16. 98pacecar

    Raiden repair

    Got a raiden board that I was told was completely dead and covered in coke. When I tested it, I found no video, but if I tapped on the HB-41 custom responsible for sound, I’d periodically get some game sounds. Touched up a few questionable solder points under the board and audio came back. Got...
  17. 98pacecar

    MS2931 screen randomly expands

    I wonder if this is a newer batch that are working better. Regardless, very cool that it’s working for you!
  18. 98pacecar

    MS2931 screen randomly expands

    Sweet! I really hope a good replacement comes around for for this fly back. These monitors are too nice to not keep running.
  19. 98pacecar

    MS2931 screen randomly expands

    That looks promising! Did you check the B+ so see if it's in the normal range?
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