Black Matrix
Well-known member
Tech Help on Freddy Nightmare on Elm Street or any System 3 pins
Hey All,
I have a Freddy that I have thoroughly buggered up. But the issue I want to fix is very simple. On the A2 power supply board (the one that converts 12 volts unregulated DC to 5 volts DC), there is a very crappy 500 ohm adjustment pot. I was wondering if anyone had a source for an improved version of this very problematic pot. I have looked at Bob Roberts who has 2 or 3 different pots, but none fit the bill. So has anyone replaced this pot. If so, what did you go with. Do you have a part number and a source. Ideally, I would like to find a fine tune adjustment pot that can be dialed in to be very accurate. For those who don't know about this problem, the pot is crappy. The 5 volts creep low or high and the Pin resets for no reason or it never boots due to the 5 volts not being there. Here is a link that talked about it before:
http://forums.arcade-museum.com/showthread.php?t=118871&highlight=freddy
But so far, I haven't found anyone that has a good fix. But I'm still looking. Its off to Rec.games.pin next. Just thought someone on here may have encountered and bested this problem in the past.
For what its worth, the pots footprint is 3/16ths by 1/8th inch. Currently, it has a universal F-type pot bent and mounted in a vertical fashion with a thumb wheel adjustment.
Here's Bob Robert's page so you can see what I'm talking about.
http://www.therealbobroberts.net/pots.html
But he may have come up with the various types just to make ordering easier. Hope all that makes sense.
Hey All,
I have a Freddy that I have thoroughly buggered up. But the issue I want to fix is very simple. On the A2 power supply board (the one that converts 12 volts unregulated DC to 5 volts DC), there is a very crappy 500 ohm adjustment pot. I was wondering if anyone had a source for an improved version of this very problematic pot. I have looked at Bob Roberts who has 2 or 3 different pots, but none fit the bill. So has anyone replaced this pot. If so, what did you go with. Do you have a part number and a source. Ideally, I would like to find a fine tune adjustment pot that can be dialed in to be very accurate. For those who don't know about this problem, the pot is crappy. The 5 volts creep low or high and the Pin resets for no reason or it never boots due to the 5 volts not being there. Here is a link that talked about it before:
http://forums.arcade-museum.com/showthread.php?t=118871&highlight=freddy
But so far, I haven't found anyone that has a good fix. But I'm still looking. Its off to Rec.games.pin next. Just thought someone on here may have encountered and bested this problem in the past.
For what its worth, the pots footprint is 3/16ths by 1/8th inch. Currently, it has a universal F-type pot bent and mounted in a vertical fashion with a thumb wheel adjustment.
Here's Bob Robert's page so you can see what I'm talking about.
http://www.therealbobroberts.net/pots.html
But he may have come up with the various types just to make ordering easier. Hope all that makes sense.
