Main > Driving & Racing Cabinets
Ridge Racer Accelerator Potentiometer
fatsgt:
Well Paul, if you have any suggestion on how to fix my video glitches now I'm all ears. :)
Paul Olson:
--- Quote from: fatsgt on July 02, 2014, 12:09:51 am ---Well Paul, if you have any suggestion on how to fix my video glitches now I'm all ears. :)
--- End quote ---
Try reseating all of the eprom chips. Be careful not to damage the legs. If that doesn't fix it, one or more of the rom images may be corrupted. You can order replacements from hobby roms if you need to. They are pretty easy to erase and burn new images on, but it requires a rom burner and a UV eraser. If you have a rom burner, you can compare the rom images against the mame set to see if it is corrupted. I don't remember if Ridge Racer used a hard drive, but the hard drive could have corrupted data as well. Sometimes, just pushing on an eprom can affect the glitch if it isn't properly seated, so maybe try that before removing them if you have someone who can watch for any changes when the glitches are happening.
Also, try reseating any of the connectors that you haven't yet reseated.
fatsgt:
--- Quote from: Paul Olson on July 02, 2014, 12:39:38 pm ---
--- Quote from: fatsgt on July 02, 2014, 12:09:51 am ---Well Paul, if you have any suggestion on how to fix my video glitches now I'm all ears. :)
--- End quote ---
Try reseating all of the eprom chips. Be careful not to damage the legs. If that doesn't fix it, one or more of the rom images may be corrupted. You can order replacements from hobby roms if you need to. They are pretty easy to erase and burn new images on, but it requires a rom burner and a UV eraser. If you have a rom burner, you can compare the rom images against the mame set to see if it is corrupted. I don't remember if Ridge Racer used a hard drive, but the hard drive could have corrupted data as well. Sometimes, just pushing on an eprom can affect the glitch if it isn't properly seated, so maybe try that before removing them if you have someone who can watch for any changes when the glitches are happening.
Also, try reseating any of the connectors that you haven't yet reseated.
--- End quote ---
OK, I have all the boards pulled. Thought I would check the power supply voltages first.
Outputs should be +5, -5, and 12.
With my meter on DC I'm getting +2, -2, and 9.
There's an adjustment on the outside that made the fan go higher but did not effect the voltage.
I'm guessing I need a new power supply?
Paul Olson:
Make sure you test the power supply voltages with some kind of load. The game running would be a good load on it. The switching power supplies need to have some load to operate properly. Those numbers can't be right, because we know that your game booted just fine, and there is no way it would boot with only 2 volts powering it.
fatsgt:
Thanks Paul. I guess I'll put everything back in the Cab then. :) I was checking the voltage on the molex connectors. When I have those connected where is the best place to check the voltages for my poser supply?
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