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  1. Arcade2007

    G05-801 ghosting really badly

    Not exactly an apples-to-apples comparison, but I recently got a Cinematronics / 19VARP4 setup running on a Space Wars board - and noticed a similar effect. The Cinematronics display does not have a dedicated Brightness control, but I did install a 5K-Ohm potentiometer in place of R10 (as...
  2. Arcade2007

    FB - 3rd Party Tempest Cocktail $250 Near Tampa FL

    Even if the monitor is non-functional - it alone is worth about 3X what they are asking for the entire machine. In all but the most extreme cases, a 6100 can be brought back to life and made reliable with minimal cost and basic skills.
  3. Arcade2007

    FB - 3rd Party Tempest Cocktail $250 Near Tampa FL

    By far the DOTD - if not the Year!
  4. Arcade2007

    MMAO - Parts: AA/Star castle coin door

    Looks like the coin door that came on Armor Attack, Star Castle, etc.
  5. Arcade2007

    6100 Jittery Picture

    When you say you are rebuilding, does that mean the monitor is outside the cabinet - on a workbench, etc.? If so, it might be something in the vicinity which has a strong magnetic field associated with it - transformer (soldering iron), fan motor, etc. Have you tried moving the monitor to a...
  6. Arcade2007

    6100 Jittery Picture

    Agreed on the need for a video clip, but one thing that can cause the jitters are oxidized / damaged terminals / bad crimps where the Focus and Screen wires exit the HV cage through the two-wire connector (P901 / J901). Gently squeeze the female terminals with a pair of needle nose pliers to...
  7. Arcade2007

    American Laser Gamed Experts!

    Here are two links that might be helpful: https://www.dragons-lair-project.com/tech/pages/alg.asp https://www.dragons-lair-project.com/tech/images/alg_gun.jpg I know that the Who Shot Johnny Rock gun does not have the mercury switch for the reload feature, so that might prevent you from being...
  8. Arcade2007

    A Vintage Donkey Kong Bumper Sticker Id never seen (aka post your favorite ephemera.)

    Found a nice set of Pac-Man tins at an estate sale yesterday.:)
  9. Arcade2007

    Defender cocktail won't start

    That placement is correct, and there should be another one actuated by the flip-down side panel.
  10. Arcade2007

    Dead Stunt Cycle : now working but has constant audio noise

    Check / replace all the electrolytic capacitors in the sound generation section. I tried to merge the two sections of the schematic and note the suspect caps. If you were to pick one, I would replace C25 (Base of Q13, 10 uF, 25V) first - as it is part of the White Noise generator and can wreak...
  11. Arcade2007

    Dead Stunt Cycle : now working but has constant audio noise

    Very helpful - thank you. The Rev B Manual (which seems to be the most commonly available) shows it as a fixed value resistor:
  12. Arcade2007

    Dead Stunt Cycle : now working but has constant audio noise

    You can use a good ol' MPSA06 for Q13 (White Noise Generator). Here's a diagram showing the Rotary Switch Functions and the Free Game Switch Settings:
  13. Arcade2007

    Should I recap a Condor switchmode power supply?

    Thank you for posting the video showing the diagnosis and repair! Kudos to the individual for providing a superb explanation of the theory of operation, compromises made due to the technology available at the time, and identification of the counterfeit parts. That was very informative and...
  14. Arcade2007

    Arcade repair party's in Arizona

    I second this - Zapcon 2026!!!
  15. Arcade2007

    My Daughter is 21!!

    This! Especially in today's corporate world where clueless management loves to pile on mountains of red tape, administrative overhead and Program Management BS.
  16. Arcade2007

    My Daughter is 21!!

    Congratulations! The time does pass unbelievably quickly. My oldest just turned 18 and started college. She was the inspiration (three years ago) to buy our first machine (Tempest), and the time spent since, collecting, repairing and playing additional machines, has been some of the most...
  17. Arcade2007

    Monitor output but no picture

    I know you have been through this exercise multiple times already, but I have to wonder if there is a cracked trace or broken component lead hiding in plain sight. Use the Resistance setting (Ohms) on your DVOM to check the resistance of the video and sync signal path from the input header pins...
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