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Old 11-16-2017, 06:13 PM
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Electronic M Electronic M is online now
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Join Date: Jan 2011
Location: Pewaukee/Delafield Wi
Posts: 14,761
Has the thermal paste/pad on the output transistor ever been changed? Sometimes in some equipment, it will get old and stop conducting heat from the transistor to the heat sink causing the transistor to overheat. Probably not the root cause of all your problems, but it could be contributing.
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