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  1. Does ChatGPT know what it's talking about?

    I asked it why Nintendo boardsets produce a smoother looking picture than other boardsets, no visible scan lines and no prominent segmentation from the shadow mask. I told it that I'd always assumed there was something special about the Sanyo monitors, but that I'd recently connected a Street...
  2. Electrohome G07-CBO degaussing and horizontal centering

    This is the original "numbers matching" monitor for my Missile Command upright, and it's been in storage for the past 15 years (I've been using a Happ Vision Pro in my Missile Command for the past 15 years). Recently I decided I wanted to put the original monitor back in my cabinet, so I...
  3. I just spent hours troubleshooting a problem with Punch-Out that didn't exist

    Did you know that Pizza Pasta and Mr. Sandman have green hair even though their hair is black in their still portraits on the upper monitor? I didn't. Even though I've played Punch-Out since it was a new game in 1984, for some reason I've never noticed it before today when I plugged my PO...
  4. These new "security" "features" are absolutely infuriating

    This is an arcade forum, not NORAD or the Pentagon. Logging in tonight, which should have taken 10 seconds, turned out to be a 45-minute project. When I put in my email address and password, instead of logging me in like it should have, it complained that I haven't logged in in over 3 months. So...
  5. Minor graphics glitch in Super Punch-Out

    There are two vertical lines attached to, and slightly to the left of, the playable character's left hip, that only show up after you win a fight and the character is jumping up and down. I know the problem is on the video PCB because I've swapped in two different video PCBs into the stack and...
  6. What could cause Punch-Out to suddenly reset itself during a game?

    I powered on Punch-Out for the first time in a couple/few years and it seemed to be working fine, but when the announcer was introducing Glass Joe 2 (fight number 7) the game suddenly reset back to attract mode. I played it a few more times, to about fight number 20 each time, and it didn't do...
  7. Super Punch-Out - graphical glitches in opponent sprites

    I turned on the machine tonight for the first time in about a year and the attract mode music came on but the upper screen remained black and the bottom screen was all black except for the Nintendo of America text on the bottom, and it stayed that way indefinitely (no attract mode). Pressing the...
  8. WTB: speaker from a Dynamo cabinet

    I'd like to have the same make and model as the one I already have, which is a 5" Speco A5CF3 from a Dynamo HS-1 cabinet:
  9. Punch-Out and Super Punch-Out graphical issue

    There's a thin, light green, vertical line in the playable character's hair (it isn't there 100% of the time; it depends on the frame of animation that the sprite is in). It's hard to get a good picture of it, but here's a mockup of what it looks like: I have 3 boardsets (2 SPO, 1 PO), and...
  10. [Solved] Super Punch-Out: missing music channel audio

    [Solved] Super Punch-Out: missing music channel audio This is TapperAdict's boardset. He sent it to me to check which ROM set version he has (it is the standard version), and while I have it, I'd like to get the audio working. Here is his explanation of what happened to it: The video and the...
  11. Are 27C240 and 27C4096 EPROMs interchangeable?

    I looked online for a cross-reference chart, but didn't find anything useful.
  12. How do I use a "Datarase EPROM Eraser by Walling Co."?

    How do I use a "Datarase EPROM Eraser by Walling Co."? The only thing I can think of is that you lay the EPROM upside-down on it, so that the EPROM window is in direct contact with that hole. Assuming that's what you do, how long does it take to erase?
  13. "Venice Beach version" of Super Punch-Out

    "Venice Beach version" of Super Punch-Out Today I stumbled across official confirmation of my 30-year-old memory of Super Macho Man being from (or otherwise associated with) Venice Beach, California: That's from the Super Punch-Out (SNES, 1994) instruction manual, and it's the first time...
  14. Does anyone know what type of connector this is?

    They are in a Punch-Out cabinet on the speakers wires (i.e., between the audio amplifiers and the speakers).
  15. WD-40 contact cleaner

    I wanted some contact cleaner spray (the old standby, isopropyl alcohol, is in no way a real contact cleaner; it's a solvent; solvents break down grease/oil but do little or nothing to remove oxidation), and the much ballyhooed CAIG DeoxIT is not only ridiculously expensive and not available...
  16. Happ Vision Pro is suddenly blurry

    I bought this monitor new in 2009 and this is the first issue I've ever had with it. I bought two other identical monitors at around the same time, and still no issues yet with either one of those. I turned my Missile Command on for the first time in several months, and the monitor came up...
  17. Super Punch-Out reboots during Great Tiger fight

    At about 36 seconds into the match the game freezes for a second and then reboots.
  18. Problems with a PC monitor

    Fixing this is probably a long shot because it isn't an arcade monitor, and parts are probably hard-to-impossible to find, but: It is a Dell P1230 22" CRT monitor, which is a rebadged Mitsubishi Diamondtron. It was a very expensive monitor when new ($679 MSRP, though I bought it used in 2006...
  19. Super Punch-Out won't boot

    I think it's my fault, though I suppose it could be a coincidence. I put some SPO security boards together this morning, and then tested them by swapping them into my SPO boardset. The first one worked fine, but the next two didn't, and they were not working in exactly the same way (garbled...
  20. Nintendo/Sanyo monitors: what causes "jailbars"?

    Nintendo/Sanyo monitors: what causes "jailbars"? I've replaced every single electrolytic capacitor in the pair of Sanyo 20-Z2AW monitors in my Super Punch-Out machine (including the B+ filter capacitor); three times since I got the machine in 2005, and the jailbars are still there. They are...
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