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#14725 - 07/21/15 10:27 PM
Re: Dead Miprom?
[Re: dandaman]
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Joined: Feb 2013
Posts: 761
john jay
old hand
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old hand
Joined: Feb 2013
Posts: 761
ohio
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Usually when both LED'S are high on the power supply board that indicates that the Power Supply Board is bad. I would start there. With all the I/O and Smart Boards pulled, you should have, 120vac from L1A to L2B, 17 to 27vdc from V+ to V- on the Power Board. 5vdc is measured across the 4000mfd on the Power Board.A bad Power Supply Board was most likely the original problem if both LED'S were high.
Last edited by john jay; 07/21/15 10:30 PM.
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