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Author Topic: Board diagnosis/repair Sydney  (Read 315 times)

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Re: Board diagnosis/repair Sydney
« on: August 14, 2010, 12:28:38 PM »
Quote from: slammer on August 14, 2010, 10:58:12 AM
What is the fault? Which machine?
Williams Comet, System 9 MPU board.
Variable hum in attract mode, no boot up sounds.
Can find similar problem searching the net, but no answer to the problem.
Cheers
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