Recent content by rhombus

  1. rhombus

    Williams Defender Arcade Prototype

    The next thing I would do is make sure that ROM #7 and #10 are good. Just by reading the chips doesn't guarantee that they are. You need to get a good know chip to replace them. Maybe a little hard since it's the white label? (check with https://www.hobbyroms.com/) Also another thing that...
  2. rhombus

    Williams Defender Arcade Prototype

    nice find. I was in Germany in the early 80's and I played Defender almost every day. Couldn't get onto Asteroids because the older kid were always on it. So I got really good on Defender. As for your problem: Your last picture shows the normal test patter (rug test). On the green set...
  3. rhombus

    2025 MOMA Annual arcade auction

    Yeah, those good old days are gone. Remember the IA actions? What a blast those were too. Towards the end of the auction no one had room for games anymore and they were going for around $50 a game. oh yeah the good old days.
  4. rhombus

    FS Parts: old 60-1 jamma pcb, non working $10 plus 1 ship, total 11

    yeah I know. I built about 10-12 multi games a year, for at least 10 years. At the time, I barley posted an ad on CL and they already sold. I even had a guy come down from Canada to buy one. Not any more, I wouldn't think of building any more. I don't see anyone else building them in my area...
  5. rhombus

    SOLD - PARTS Needham amp10 programmer

    SOLD now. I also have a Xeltek PS2 that I'm using. The emp10 will work better on most older PCs. The PS2 uses an ISA card which is a little harder to install on newer PC. I don't need both anymore so it makes more sense selling the EMP10.
  6. rhombus

    SOLD - PARTS Needham amp10 programmer

    Selling my working EMP-10 programmer for $75 shipped in the US. It programs just about all the ROMs you will ever need for games of the 70's to late 90's. It is very reliable and never gave me a problem. It comes with all the modules, power plug, parallel cable, 3 1/2" floppy disk and...
  7. rhombus

    FS Parts: Misc pinball manuals

    Misc. pinball manuals. $20 for all shipped in the US.
  8. rhombus

    SOLD - PARTS Arcade manuals

    Some misc manuals. Some are originals and some are reprints. $20 for all shipped in the US.
  9. rhombus

    FREE - Parts: B/W 19" TV - with tube 500XB4

    Still have it. BTW, to TX it costs $115 for shipping plus packing fee of $35 via FedEx. If you find a cheaper way to ship let me know. I could take all the guts out and maybe save on shipping a little if interested.
  10. rhombus

    Anti Aircraft/ XM-501 Vertical(?) Collapse

    John McCann in Altura, MN. I sold him an Anti-aircraft game many years ago. As I remember I had similar problems when I first acquired the game. Sorry, can't remember what I did to fix it. I'm sure I caped it and I also think I replaced the the trans. in the out put stage, not sure if that...
  11. rhombus

    Anti Aircraft/ XM-501 Vertical(?) Collapse

    Did you get this game from John?
  12. rhombus

    FREE - Parts: B/W 19" TV - with tube 500XB4

    Bump This will work in 19" vector games like Asteroids, Omega Race that use G05-802 or 801 and 19v2000 monitors. No burn in. It's still here if anyone wants it.
  13. rhombus

    FREE - Parts: B/W 19" TV - with tube 500XB4

    I had this TV for a while now thinking I was going to use the tube but it never happen. It's just sitting around, time to move it along. Free to whomever wants to pick it up or have it shipped. I'm guessing FedEx would be the cheapest ($70+?). I don't have any box to but it in, I would have...
  14. rhombus

    Is it possible to read the 2 video decoder Proms used on the CPU Bd. in Defender?

    I was able to get both the 2716 and 2732s to work on Defender decoders without any problems. The new Williams games didn't like the EEPROMs when I used them for the #6 Decoder (gave me RAM errors on start up but then worked sometimes). The #4 Decoder seems to work fine. If you need direct...
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