The right channel on my onkyo 7.1 surround sound receiver is not working. the speakers are connected correctly and working properly. if I use the test tone it shows that the right channel does not work. If I use headphones it is the same the right channel is not working. any suggestions what that could be caused by and how to fix it?

SOURCE: Onkyo TX-SR502 - o Sound!

pls make it reset at factory level ,but pls note that you have to keep it in aauto mode

SOURCE: Onkyo TX-SR500 Dolby Digital problem

I just read over the problem you were having with your Onkyo TX-SR500 receiver. It sound like the unit needs to be setup for all five channels.Sence your symptom says the diplay shows Dolby D3/2.1. According to the owners manual with the remote control look for speaker setup whin the button is pressed the current speaker setup will be shown in the display. Press the preset/adjustment<> to change the current setting to five speakers. the listening mode will automatically change according to the number of channels you selected. Hope this helps. Radiotech

SOURCE: Surround Speakers stop working

More then likely unit has poor solder connections. Try lightly tapping on chassis to see if you can get audio to either cut on or off with the vibration, If you can unit has intermittent solder connections probably around power amp ic701 where most of the heat is generated. I have a PDF service manual if you need it for yourself or for a technician if you take it in for repair [email protected]

SOURCE: I HAVE AN ONKYO TX

The symptom you described can be caused by any number of things. I always start with the output power transistors which are the first things to blow with a speaker output overload condition. Unplug the power cord to your unit, remove the top cover and use an ohmmeter to check resistance from C to E on all 10 of the power transistors (Q6050 thru 54 and Q6060 thru 64) attached to the large heat sink. Blown transistors typically read <1 ohm, compared to good transistors that are >10k ohms. If you find a bad transistor it will need to be replaced.

SOURCE: Onkyo TX-DS 595 receiver surround channel unrealiable

How you power off the amp won't hurt it generally. I used to fix ONKYO amps under warranty, and I can tell you now, it will be full of dry solder joints. Take you unit to your local repairer, and they will resolder all the offending PCB's inside. This type of repair will fix 99% of strange audio noises and cutting in and out etc. for ONKYO recievers. Otherwise this is quite a good product.

Testimonial: "Thanks for the advice! I'm going back to the shop where I bought it seven years ago to see if there are any reasonably priced repair options."