Gorf - Switching power supply from Arcadeshop

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I have a Gorf game that used a switching power supply from Arcadeshop with the adapter to allow the harness to plug right on.

One day, I somehow shorted out the power supply and it no longer lights up. Completely dark. In addition, the WG k4600 monitor no longer has neck glow and will not light up the screen. Prior, it did though all it would do is show a green glow on the screen itself..now nothing.

I saw a fuse on the monitor chassis and it looks like it has not blown.

When the switching power supply went out, I moved the game harnesses over to the stock power supply board mounted on the wall...this restored the game to being able to be played, though now its blind. No monitor neck glow. Game coins up, etc and you can hear audio etc...

I think this is a power issue but not clear if that issue is with the monitor chassis now or back at the power supply board or the switching power supply.

As far as the game power supply board, its the PCB with the large heatsink, etc mounted on it..not the isolation transformer block on the bottom of the game. Someone prior to me has installed the switching power supply and left part of the game power supply board disconnected as a result...probably ok but since the Switch power supply is out, back to the old board.

Any thoughts?

I heard on another forum that a faulty switching power supply can cause seemingly monitor symptoms while still allowing a game to play otherwise...Any experience with this to be shared?

I also do not know if those switching power supplies can be serviced..tempted to unscrew the housing and look...wondering if they have a fuse inside or something that could have blown that I can fix.

Thanks you..
 
Your should post this in the repair section.

Sounds like a Monitor issue. You stated that the monitor has a blown fuse, and the game plays blind with another power source. Rebuild or buy another monitor chasssis. Your switcher is not sending power to the monitor. That would be the power block in the bottom of the cab. You can meter the connector that supply's power to the monitor, to see if your getting power to the monitor. If it has a blown fuse monitor wont work, you can test the fuse and see if its good. I would also meter voltages on the switcher your using, and the connector that plugs into the pcb to make sure your voltages are correct.
http://arcarc.xmission.com/PDF_Arcade_Bally_Midway/Gorf_Parts_and_Operating_Manual_(Feb_1981).pdf
 
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