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| BewareILive:
I recently bought a broken Sinistar machine, and I am trying to figure out what is wrong with it. When I turn it on, the monitor does turn on and is just a white screen. No other lights (marquee or button) work, and none of the LED light up on the ROM boards. Any suggestions? |
| lanman31337:
That's the machine's way of saying "Run Coward". All jokes aside, I'm not sure where to start, sorry, maybe a bad power supply? |
| alfonzotan:
--- Quote from: lanman31337 on May 14, 2012, 08:18:26 am ---That's the machine's way of saying "Run Coward". All jokes aside, I'm not sure where to start, sorry, maybe a bad power supply? --- End quote --- That'd be my first guess, too. Here's an outfit that advertises power supply rebuild kits for Williams games (disclaimer: I know absolutely nothing about this company or their products; it was just the first link that came up on Google): http://www.arcadesolution.com/wmpsrebuild.html |
| BewareILive:
--- Quote from: alfonzotan on May 14, 2012, 09:30:48 am --- --- Quote from: lanman31337 on May 14, 2012, 08:18:26 am ---That's the machine's way of saying "Run Coward". All jokes aside, I'm not sure where to start, sorry, maybe a bad power supply? --- End quote --- That'd be my first guess, too. Here's an outfit that advertises power supply rebuild kits for Williams games (disclaimer: I know absolutely nothing about this company or their products; it was just the first link that came up on Google): http://www.arcadesolution.com/wmpsrebuild.html --- End quote --- I actually had some parts from a Stargate machine, and I used the power supply from that. Now the same thing happens, except I can hear a hum from the speakers and the "LED 3" light is on. Where can I go from here? Edit: Actually both LED 1 and LED 3 are lit up. |
| BewareILive:
So I removed one of the ROMs that looked to be rusted, that was apparently why LED 1 was on, because now only LED 3 is shown. According to the Sinistar manual, when LED 3 is on "3 MEANS CMOS RAM ERROR." "(1) Check pin 22 of CMOS RAM for +3.2VDC minimum. If present, replace CMOS chip 1C. If absent replace AA alkaline cells. (2) With new alkaline cells, check for +3.8v DC. If still absent, replace diodes D9 and D10. (3) Upon power-up and re-entry into diagnostics if CMOS error message persists, check CMOS RAM memory protect and address decoding circuits with a logic probe." I really don't know what "pin 22 of CMOS RAM" is or how to check it. I've searched the manual and they don't mention it often, or show a picture. |
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