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Old 09-15-2017, 05:21 AM   #80
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Join Date: May 2012
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Default Re: Pioneer VSX-520-K Protection problem

Originally Posted by srt1 View Post
D449 and d550 is not present on board but its shows in scematic
Ok, that helps to make sense of the voltages. The leakage has to be between collector and base pads of Q444. Try to clean it again. Do you have any information about the flux?
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