Question about Sony STR-DE715 Receiver
The outputs are ok.
If the output are good, Check for a 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 circuit.
Posted on Jan 22, 2009
Tips for a great answer:
Aug 23, 2011 | Sony STR-D1015
It is not so easy to probe into to find a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.In this case I think that some capacitors are faulty as when the set is put on it charges on to make the amplifier work. Possible fault in the protect circuit or preamp.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother 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 check for short on the speakers.
May 11, 2011 | Marantz SR4500 Receiver
Jan 29, 2011 | Sony STR-DE845 Receiver
Apr 06, 2010 | Yamaha RX-V661 Receiver
Apr 01, 2010 | Denon AVR-1905 Receiver
Feb 27, 2010 | Yamaha RX-V463 Receiver
Dec 18, 2009 | Sony STR-DG510 Receiver
Dec 10, 2009 | Onkyo TX-DS838 Receiver
May 01, 2007 | Harman Kardon HK 3480 Receiver
Jan 25, 2014 | Sony STR-DE715 Receiver
190 people viewed this question
Usually answered in minutes!