My STR-DE835 receiver will not stay powered on

Check the circuit going to str-de835 probably there is an open resistor leak of diode check one by one.

IF any other source plays fine with the RR speaker, and IF it only happens with the DVD player and IF you're using the 5.1 analog audio feeds to the STR, maybe the audio on that channel is **** from the player. You could prove that by temporarily swapping the RR input from the DVD to any other channel input and test it at a medium level.

If it stays with the DVD RR output, the player or the cable would be suspect. Swap in a different cable and make sure it is not routed uniquely near any sources of magnetic fields, motors, UV or track lights, etc.

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If you're using digital input all that advice was a waste of time to create as there is nothing external to the chipset that could affect one input channel. Try a different digital input on the STR.

you have speaker wires that are shorting out. unhook all the wires and ohm them out. Find out which one is shorting. I've had this problem before. It's fine until you turn it up, Then the receiver turns off and goes into protect mode. It's just a short in the wiring,.

Have you checked the rails to ground for shorts. Get hold of a variac as it does make things a lot easier.

Sound like you might have some shorted output devices.

Hope this helps
Thanks for using FixYa

THIS UNIT HAS BAD SOLDER CONNECTIONS ON REGULATOR TRANSISTORS,REMOVE BOTTOM AND YOU WILL SEE THE BAD CONNECTIONS.ALSO BE SURE TO RE-TIGHTEN ALL CHASSIC GRD SCREWS AS THIS WILL ALSO CAUSE THE SAME PROBLEM.

Theres a couple of problems you may have. 1 bad solder connections,you can remove bottom plate and look for bad connections and 2 you may have shorted transistors, however if the protect relay comes on its probly bad connections.

THIS IS NOT A MODIFACTION ,ITS AND ADDITION TO THE ORGINAL SERVICE MANUAL WHERE THEY LEFT OUT THESE PARTS ON THE ORGINAL SERVICE MANUAL.

My DE-835 Did the same, even with no speakers connected. My fault was caused by the IC501 chip having cracked solder contacts on the main board. Heating (expansion) and cooling (contraction) causes this to happen in many devices. I reflowed the contacts and it works great. I accessesed the bottom of the board by removing the bottom case panel. Be very careful keeping the solder pads from bridging to adjacent contacts. I could see the cracks easily around the IC pins. Before soldering the contacts applying slight pressure on the chip towards the side, I could turn the unit on without having it go into protect. If you try this, watch out for touching live (power) conductors.

it could be your wire. try using different speaker wire. if it still has that same problem, take the cover off and tap on the amplifier.

I found the operating instructions here:
http://esupport.sony.com/CA/perl/model-documents.pl?mdl=STRDE835