Onkyo TX-NR801 Receiver "board circuit protection" Questions

...circuit board behindd the transformer. After that it worked for a few days. Now until recently it is dead again. The system is not responding to standby button or remote. What may be the problem? ...

...bad/loose ground. Check the solder near the input jacks, and tighten any and all ground screws that hold the circuit boards to the chassis. It could also be a bad transistor in the protection

board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then

board. Maybe the protect circuit by itself is shutting off due to a faulty bias or there is a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the amplifier comes

board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then

circuit board (due to a hairline crack on the pin itself. When it got that hot, ther metal pin seperated at the crack which made this chip short out, creating the "protect" to happen. I resoldered the

board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then

...board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit.Also disconnect the speakers and test, if the protect is off then ...

board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then

a transistor) and replace it. Another possibility could be cold solder connections on the board. Inspect the printer circuit board, on the solder side, and check for bad connections (solder junctions)