Ray Twp., MI
I switched the boards to see if the problem follows, probably a bad transistor.
(Topic ID: 155589)
Bad board. I actually ordered a spare with some other parts so it was an easy swap. Will probably repair the old one later.
Ok so I have a quick question about the flippers. I rebuilt the left and it's working great. I rebuilt the right but haven't installed yet. The wiring looks different from the left one. Here is a photo ofnit before I took it apart, does this look normal? Does the right flipper have any other use that would need it to be wired differently?
Thorold, ON
1 week later
Ok...all I have left are the 2 kicking targets and the vari-target. Nothing registers when any of them are activated. No score, no kickback...nothing. Where do I start? I originally checked the fuses and they all seem to be fine although I think I might go back to check again as a few of the fuse holders were mildly corroded.
Quoted from bpa:I am a bit stumped on where to begin. If anyone has suggestions, please let me know. Thanks!
Switch contacts and connectors.
1 week later
Kick back targets are now functioning. Varitarget works now as well but I need to adjust the switches to get it working right. I do have a problem with it returning back to its start position though. I pulled it, cleaned everything and still sluggish (sometimes not even returning). Do you think I need to wind the spring a few more times to make it stronger?
I'm an idiot. I was testing it while the play field was up. Everything is working now! Will post some pics later tonight.
3 weeks later
Been awhile since I've updated this thread. I've been able to put a bunch of games on the machine and I only have one issue.
Sometimes when I turn it on, I will have no sound. I'll start playing and eventually I will get sound effects while playing. Once that happens and then the ball drains, I will get music back. I reseated all of the connectors on the sound board but that did not fix the problem.
The game over switch is currently closed all the time since I need to replace the solenoid. Would that cause the problem? Also, I can't seem to locate a replacement solenoid.
Quoted from bpa:Sometimes when I turn it on, I will have no sound. I'll start playing and eventually I will get sound effects while playing. Once that happens and then the ball drains, I will get music back. I reseated all of the connectors on the sound board but that did not fix the problem.
Sounds like you might have capacitors dying in the sound area. If the sound effects fade in rather than coming in instantly, I'm expecting the caps are just bad enough that they start acting correctly once they've "warmed up".
If it's a sudden return, there might be a transistor or diode for the sound that's flaky.
I just moved my pins to the basement so I'll be taking a look at the Genesis problems this week. I have no sound now so first thing I'm going to take a look at pinwiki tonight to see steps for troubleshooting. Also going to run the solenoid test to see what's up with the game over coil. I'll try to take a pic...its tucked in tight
Pic of game over relay attached. I ran the relay test and I don't hear anything for relay 0 (game over relay). My temp fix was to pinch the switch closed so i can play but I would like to fix it.
I haven't looked too far into the no sound problem. When I power the machine on I usually get a beep and the led is flashing as it should. Pressing the test buttons plays the audible beeps. I ordered a logic probe to measure signals. For awhile the sound would kick on after playing for a bit but now it's not working at all. So perhaps it is a cold solder joint? Or maybe one of the roms or the DAC failed? Should I just replace them first?
Quoted from bpa:Pic of game over relay attached. I ran the relay test and I don't hear anything for relay 0 (game over relay). My temp fix was to pinch the switch closed so i can play but I would like to fix it.
Try straightening out the leaf with a leaf adjustor tool. Also run an index card between the contacts while pinching them to clean them.
Quoted from bpa:I haven't looked too far into the no sound problem. When I power the machine on I usually get a beep and the led is flashing as it should. Pressing the test buttons plays the audible beeps. I ordered a logic probe to measure signals. For awhile the sound would kick on after playing for a bit but now it's not working at all. So perhaps it is a cold solder joint? Or maybe one of the roms or the DAC failed? Should I just replace them first?
I would check voltages, making sure the legs of the socketed chips are clean, that they make contact through the socket to the board, that there are no cracked solder joints, and then finally tackle cap replacements before diving too much further into troubleshooting.
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