Recent content by mattosborn

  1. mattosborn

    Old Members - UGH

    Old is when you repeat yourself one minute later.
  2. mattosborn

    New Members - UGH

    OK, I'll share a story that happened a few months back. Guy first asks me about some drive images for a system. I spend a couple hours finding them (had to search a few external HD's to figure out where I stored them), then have to copy them to a memory card to mail to him (he didn't have any...
  3. mattosborn

    Weird Nintendo VS Dualsystem upright board

    I’m not familiar with that particular daughtercard, but they usually run code from the PRG1/2 sockets on the card. Seems odd that it would not block access to the ROM bank on the main board… but you have it working, so it must be so. The daughtercard might be interfering with the shared CMOS...
  4. mattosborn

    Weird Nintendo VS Dualsystem upright board

    Incorrect. With that daughtercard installed, it will not use the EPROMs on the main board.
  5. mattosborn

    Funny message after Galaga high score entry.

    I believe Joe liked to joke that Mark lived in his mom's basement (and is known for using the initials "ASS"), so it would not surprise me that he asked for this dig to be added to the kit.
  6. mattosborn

    Wanted: Omega Race Cabaret Marquee

    Yeah, it sounds easy in theory. The hard part is evenly applying heat along the whole edge. It has to get quite hot! Practice on some scraps first.
  7. mattosborn

    Wanted: Omega Race Cabaret Marquee

    I made one once for a Ms Pac cabaret (with custom graphics for a Namco Classics Collection board). It was really hard! Getting it evenly heated up with a heat gun without warping was tough. Came out OK though. I did heat up one end a bit too much, resulting in a little warping and a few...
  8. mattosborn

    Thanksgiving trip -- Arkansas to NH

    You boys need to hug it out! 🤗
  9. mattosborn

    Arkanoid spinner disassembly... how...?

    Again, there's no reason to remove the knob from the shaft (unless the shaft or knob are damaged and need to be replaced).
  10. mattosborn

    Omega Race HS Save Kit Help

    Not sure when it went in, but that chip is old! I have a fresh new NVRAM you can pop in there.
  11. mattosborn

    Is a fixed Joust EGO ROM available?

    I did all the Williams games. See the link in this post: https://forums.arcade-museum.com/threads/centipede-rom.496137/#post-4399691
  12. mattosborn

    WTB: Wedge Based Bulb Sockets

    Try using the "flex" bulbs in cases where light placement is tricky. https://www.cometpinball.com/products/1smd-flex
  13. mattosborn

    Hypersports very 'square' rather than 4:3

    I worked on a T&F cocktail (repaired the K4900) for a friend a little while back. You should be able to adjust the monitor to fill the entire screen. If not, there's something wrong with your monitor.
  14. mattosborn

    Track & Field PCB troubleshooting help needed

    Doing an A/B comparison between good and bad boards is not really helpful at this point. If you suspect an address decoder chip is faulty, you need to look at its inputs/enable and see if the outputs are behaving accordingly. Maybe this will help you...
  15. mattosborn

    Track & Field PCB troubleshooting help needed

    It's not running code.... Isn't the CPU watchdogging? You're going to see all kinds of crazy shit until you sort that out. Start with the CPU and it's access to ROM/RAM.
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