Pleiades10
Well-known member
Yesterday, my Arkanoid 2 crapped out. This is a converted Midway Kickman, and still uses the original power supply set up, no switcher. Around 5pm, I was getting an "I/O ERROR" on the monitor.
I found that one of the credit switches on the coin door was stuck in the down position. I freed that up, and the error went away and it played fine.
Then, about 2 hours after that, the image on the screen started to shake... more of a slight "jitter". Then, the normal game screen was replaced with jittering dots in a diagonal pattern. It almost looked like the horizontal or vertical hold went screwy, except there were far less pixels on the screen than normal. After a few more seconds, the monitor went black altogether. The game did not play blind at this point. The marquee was still lit, and I still had neck glow on the monitor.
Power cycling the game and flipping it into test mode did nothing.
I thought it may be the slam switch on the back door. Every so often the backdoor doesn't engage the switch in all the way, causing the machine not to come on at all. I removed the backdoor, pulled the slam switch out, and flipped the game on. Same problem.
Game screen jitters, then jittery diagonal dots, then black monitor with neck glow.
I had two spare (untested) linear power supply boards (A082-90413-D000) so I swapped those in. For a few minutes, it appeared that the first board fixed the problem until the jitteryness returned. Same results with the second power supply boards.
By this time, it was after 1:30am, and I was getting sleepy and ticked off, so I decided to return to the project another day. I haven't tested the voltages yet, (I was hoping it would be a simple power supply board swap) but I'll do that next. I also plan to examine the molex connectors that plug into the power supply board in case they have corrosion inside and need replaced.
I saw that Arcadeshop.com sells a Midway linear switching power supply adapter, but it's $45, and I'm broke until my next paycheck on Friday.
Any ideas? Could the problem be something else in the cab, and not the power supply at all? I've heard that the linear power supplies have issues, but it seems unlikely that all 3 linear power supply boards are producing the same issue.
Kyle
I found that one of the credit switches on the coin door was stuck in the down position. I freed that up, and the error went away and it played fine.
Then, about 2 hours after that, the image on the screen started to shake... more of a slight "jitter". Then, the normal game screen was replaced with jittering dots in a diagonal pattern. It almost looked like the horizontal or vertical hold went screwy, except there were far less pixels on the screen than normal. After a few more seconds, the monitor went black altogether. The game did not play blind at this point. The marquee was still lit, and I still had neck glow on the monitor.
Power cycling the game and flipping it into test mode did nothing.
I thought it may be the slam switch on the back door. Every so often the backdoor doesn't engage the switch in all the way, causing the machine not to come on at all. I removed the backdoor, pulled the slam switch out, and flipped the game on. Same problem.
Game screen jitters, then jittery diagonal dots, then black monitor with neck glow.
I had two spare (untested) linear power supply boards (A082-90413-D000) so I swapped those in. For a few minutes, it appeared that the first board fixed the problem until the jitteryness returned. Same results with the second power supply boards.
By this time, it was after 1:30am, and I was getting sleepy and ticked off, so I decided to return to the project another day. I haven't tested the voltages yet, (I was hoping it would be a simple power supply board swap) but I'll do that next. I also plan to examine the molex connectors that plug into the power supply board in case they have corrosion inside and need replaced.
I saw that Arcadeshop.com sells a Midway linear switching power supply adapter, but it's $45, and I'm broke until my next paycheck on Friday.
Any ideas? Could the problem be something else in the cab, and not the power supply at all? I've heard that the linear power supplies have issues, but it seems unlikely that all 3 linear power supply boards are producing the same issue.
Kyle
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