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Hello everybody, could someone please confirm that Uzi's coil SNK used to mount in gun assemblies for Beast Busters and Mechanized Attack worked out of 12V? I have one by hand, but seems weak to me @12V... Maybe I should go with 24V? Any advice will be much appreciated :)

Hello everybody, does anyone know if the NAMCO Pole position hardware actually supported outputs? I found this pinout online, with a "start lamp" indication at pin 2 of the 18 pins connector. Does it make any sense to you? If I am right, Atari hardware had no outputs. Thanks in advance for the help

Hello everybody, could someone please tell me what is the spacing between pads in poleposition PCB? Am I correct assuming that could be the same as for a JAMMA connector (3.96 mm)? I am trying to replicate it in Eagle CAD for a project :) Thanks in advance!

Hello everybody, in my understanding SEGA used Molex connectors for Video and audio connectors with 0.156 inc pins spacing. Does anyone know what's the correct code for them? Are they still available? Are there direct replacements eventually? I found KK series, but I think the friction lock is...

Hello, looking at the wiring schematics for both outrun and super hang on I noticed that the SSD motor driver board has 2 wires coming from the AMP-50 connector. Are those control inputs? Why are there two of them? Many thanks in advance

Hello everybody, long time no see :) I am working on a sort-of universal interface for arcade cabinets. I am on the so called "outrun hardware" now. I am in the need for a good scan of the wiring scheme you can find at the end of the operator manual to locate where the turbo button goes in the...

Hi all, after some year of hold, I am getting back to my paperboy restore. I am starting back by checking the PROMS of the CPU and Video boards. The CPU board has 23128 PROMS and i had no problems reading them as 27128. The video board, instead, is full of 23256 PROMS and my programmer cannot...

Hi all, i am in a dead end with my 25" Zenith, but i have a Hantarex MTC9110 working chassis in the need for a tube. The Zenith tube is a GA63ADG25X (CR23 socket) with 1.8 ohm (H), 10.3 ohm (V); i found a recent topic >>HERE<< where 1.4ohm (H), 9.6ohm (V) are declared for the MTC9110, so they...

Hi all, my zenith made 25" k7000 series is in high voltage shutdown. I have the HOT by hand, but i dont know if the pin-by-pin resistance readings i get are ok or not. Could anyone with a known good HOT (TZ 1167-01) measure those values for reference? Thank you!

Hi all, after more or less 4 years my Race Drivin' is finally in my garage and ready to be serviced :) It had a bad GSP RAM error (very common issue in Race/Hard drivin' boards from what i can read) that i easily solved by replacing the bad ram targetted by the board selftest. Now a bad ADSP...

Hi, being going to remove my working monitors from my punch-out just to lighten the cab and make a move easier, i decided it was time for a little servicing on them (they had never been serviced before). On both I replaced C407, R472, R473, R478, removed the glue from VR601 to avoid forcing...

Hi, as title say, my punchout lower monitor has blue where should be black. I t's definitely NOT a monitor issue because by swapping the two monitors the issue is always in the lower monitor. Here are some pics of the issue (the upper monitor is ok, it only needs some fine tuning) As you...

Hi all, I am trying to figure out how to repair my Brezzasoft Crystal System with audio issues. When i bougth the PCB it had the audio potentiometer (5 pins) broken, so the volume could not be tuned (the game was playing very loud). Removing what was left of the pot did not solved the audio...

Hi all, i have this cyber lip cartridge with a sound issue lying there for a good 3 years now and being in a good mood with neo geo i decided to ask for help with it. The issue is that some sounds (coming from the music, not shot/hit or whatever effects) are scratchy. I have tested the PCB...

Hi all, a couple of month ago my beloved MTC 9300, 25", started showing a weird issue. It's also difficult to explain and different from every other issue i have seen: essentially, after a brief period of work (the issue could be caused by a defective component then or cold solder, i thought)...

Hi all, i am trying to find out a scan in "ready to print" format of the Paperboy handlebar and (eventually) sidearts for my beloved Paperboy. I had no success surfing the net (i only found the marquee) so i thought to ask to the community for help Thanks!

Hi, I am looking for a SEGa After Burner II PCB, better if 100% working and complete. Consider that it needs to be shipped to Italy. Thanks :)

from Thunder Blade to After Burner: Rom Swap possible? Hi all, anyone know if a ROM swap could convert a Thunder Blade PCB into an After Burner/AB2? Are there custom chips that should be also swapped for the convertion? Thanks

Atari Paperboy: replacing a Disco monitor with an Hitachi Hi all, I am trying to figure out how to replace my “beyond any doubt” dead med res AGM20M Disco with a “no manual nor info available anywhere” Hitachi GMK-20P monitor. Having not the manual for the Hitachi, just to avoid to readily...

Hi all, i recently bought an Hitachi 20", 25KHz Monitor (GMK-20P), to revive my Paperboy. The monitor was mounted in a Virtua cop 2 arcade machine. It looks like the manual for this monitor is not available on the net, nor any info about it ... do you know where i can find something about it...