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  1. NANAO MC2000R Vert Collapse

    Dumb move-I know-powered this monitor up with a 120V isox not realizing it needs 100V, so now Vert collapse. Found lots of info for the MC2000S with a similar problem but nothing for a 2000R. Is there any major diff between the two? So, following Kens' info for the 2000R I found R416(22 ohm...

  2. 1942 Capcom help needed please

    Installed a 1942 board in a Midway CT and something isn't right. Player 1 - everything works as it should. Player 2 - the plane moves from its center to far left and stays there. I have no L/R control on the stick and can only move Up. Then when I center the control my plane drops to the...

  3. Screen changes to green

    Very strange behavior with my(Jomac calls it an Orion PWB-2022 but Ken in an earlier discussion said SI\Kortek)that showed this same symptom with a Mr. Do board as it's now doing with my Capcom 1942. OK...everything looks fine when first powered up. Then within 10 seconds with the B+ at...

  4. A Taito Superman test pattern question

    Can someone tell me what test patterns are on this board? More specifically: does it do solid color screens besides a crosshatch(I'm assuming it has that at minimum) that would be useful to do a dynamic convergence on a tube swap in my Galag? My Superman doesn't have any any kind of test...

  5. Combining seperate sync with a 7486

    Hi All I'm trying to combine seperate sync to make -Comp using a 7486. My wiring is this: Pin 1 = H input Pin 2 = V input Pin 3 and 4 tied Pin 5 tied to 14 (I'm starting with +Seperate) Pin 6 = -Comp output Pin 7 = Ground Pin 14 = Vcc +5 I'm wondering if I need to ground any inputs for the...

  6. Commodore 1084 Power Supply Board

    I'm looking for a working PSU for a Commodore 1084 (or 1902A). Anyone have a junker they're parting out? Thanks Ben

  7. Pit Boss help needed

    Hi all Does anyone have the dip switch settings for the early Pit Boss? This is the Merit 200 board with Poker,Blackjack,Dice and Slots. Thanks for any help on this Ben

  8. Commodore 1084S-P

    OK, finally got the courage to wire up a newly aquired 1084 to my Merit Pit Boss. All went smooth just had to invert my pos seperate sync. The only chip that I had was a SN74LS04N. Is this an acceptable sub? I get a picture-but it seems like it doesn't want to hold sync and alternately curls...

  9. SI 313 Monitor

    I'm looking for a schematic for a Sharp Image 313 monitor. Anybody got one? Ben
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