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  1. stj

    Any suggestions on Polygon Graphics issue on Model 2B Cyber Troopers - Virtual On?

    probably bad solder joints - the boards are huge
  2. stj

    Megatouch XL shenanigans: Looking for images, HDD preferred.

    so game-wise, are they better, similar, or worse than megatouch??
  3. stj

    Mylar Green Polyester Pet Capacitors

    well film caps dont get intermittent and usually only fail in high voltage circuits.
  4. stj

    Megatouch XL shenanigans: Looking for images, HDD preferred.

    what is the protection on photoplay and the hardware in general?
  5. stj

    Vertical position Adjustment not working

    number one problem in monitors is actually cracked solder joints. unfortunatly people often manage to ignore them until something else fails
  6. stj

    Mylar Green Polyester Pet Capacitors

    why are you replacing mylar caps? the value is printed on them anyway.
  7. stj

    Killer Instinct Dual Board

    5v & ground are in the 44pin mini ide header
  8. stj

    Killer Instinct Dual Board

    i have double-CF adapters, you could rig one to swap the select signals around between games.
  9. stj

    MV1FZ Hardware Test Failed (diagnostics help request)

    is there a test-pin on the clock chip you can get 32KHz from?
  10. stj

    MV1FZ Hardware Test Failed (diagnostics help request)

    interesting. so i'd be looking at the clock, the backup ram and the associated tracks. does the clock work? maybe the crystal is dead.
  11. stj

    MV1FZ Hardware Test Failed (diagnostics help request)

    switch all switches off - check the pins for relativly high resistance, switch them all on and check they all show shorts. i'v only seen bad dips a couple of times - excluding battery corroded ones though, but worth a look
  12. stj

    To those with Altered Beast (any version) and the S16 multi. Can you check this out?

    so who's gonna go looking through sample lookup tables?? lol personally i have more important things to do. if i have free time my priorities are dumping pld's and trying to kill protection checks - because i dont like them. :D i killed the protection on mr.do for example - just because the hot...
  13. stj

    Namco System 11 - volume potentiometer

    try aliexpress, it looks like it's intended for a pocket radio
  14. stj

    Yes! Yes I would like to buy a MV4-FT2 for $20 - that sounds like a perfectly sensible idea.

    i just pull and test all the ram on neogeo boards. i use a 28pin soic to dip adapter i got from china to test the smd parts real fast in my programmer. anybody doing more than a few boards with smd ram should get one - they are only about €5-8 if i remember right. :)
  15. stj

    Yes! Yes I would like to buy a MV4-FT2 for $20 - that sounds like a perfectly sensible idea.

    cold effects capacitors and temperature change also causes expansion/contraction that can indicate broken solder joints
  16. stj

    Yes! Yes I would like to buy a MV4-FT2 for $20 - that sounds like a perfectly sensible idea.

    battery current does attract corrosion, i'v had boards that were clean other than the backup power track all the way to and including the pin!! of the ram chip had green corrosion on it!
  17. stj

    Namco JVS I/O pcbs documentation list

    your v3 has bad sync because FL4 filter is missing probably, if fixing that wont help then replace ic11
  18. stj

    Namco JVS I/O pcbs documentation list

    the 246 board version is on the left side in the copper. 890897270x
  19. stj

    Namco JVS I/O pcbs documentation list

    well - i guess thats why they stopped soldering it in! LOL i think it was a serial port! it does catch my interest though - so do unfitted parts. i see the only difference on the v221 other than the eprom is a connector and a couple of power transistors for driving solenoids or lamps or...
  20. stj

    Namco JVS I/O pcbs documentation list

    Namco V185/V291 Gun I/O pcb although i notice it has a place to solder one on the v221 and the FCA too.
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