I am finally getting back to troubleshooting my Wizard of Wor. I started a thread back in June of 2017 on the general discussion forum that can be found here :
https://forums.arcade-museum.com/showthread.php?t=405706
This was my first arcade purchase. When I bought the machine it was in all original condition. I initially had no power so I upgraded to a new switching power supply. Once that was installed the machine booted up. All sounds work, and the game coins up and plays blind. The monitor has a white picture on it and at first I suspected the monitor needed work. I re-seated all the boards and checked all the connections to the monitor. Then I gave up on it for a bit...
Fast forward to today. I have a CGA to VGA adapter board and today I spliced it into the output from the RGB Interface PCB. Same symptom, no signal to the VGA monitor. Then I took a known working K4900 monitor I have and connected that. Same white picture. The game still plays blind and none of the three monitors I have connected seem to be getting a video signal.
Is it possible that the RGB interface board is bad? Is this a common part to fail? Is there a cap kit available for this little board? Any other ideas? Thanks.
https://forums.arcade-museum.com/showthread.php?t=405706
This was my first arcade purchase. When I bought the machine it was in all original condition. I initially had no power so I upgraded to a new switching power supply. Once that was installed the machine booted up. All sounds work, and the game coins up and plays blind. The monitor has a white picture on it and at first I suspected the monitor needed work. I re-seated all the boards and checked all the connections to the monitor. Then I gave up on it for a bit...
Fast forward to today. I have a CGA to VGA adapter board and today I spliced it into the output from the RGB Interface PCB. Same symptom, no signal to the VGA monitor. Then I took a known working K4900 monitor I have and connected that. Same white picture. The game still plays blind and none of the three monitors I have connected seem to be getting a video signal.
Is it possible that the RGB interface board is bad? Is this a common part to fail? Is there a cap kit available for this little board? Any other ideas? Thanks.
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