Hi, My pioneer VSX 819h went into protection mode. It now won’t enter service mode. I’m following the service manual. The only thing it does is turns on for 4-5 secs when pressing power button+adv-surround which according to the service manual is used for clearing the error counts. Thanks
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Until you resolve the protect mode, the amp will continue to work as you see it. Protect usually indicates that there is a short in the output section and the amp shuts down to prevent further damage. Since this amp uses discrete transistors for outputs, check each one for a short. Once found, change the entire pair (2SD and 2SC transistors) and any other components in the area that are effected.
Dan
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