Re: Onkyo TX-8050 AV-Receiver no sound

I have a DMM and a 30$ DIY scope, but i think it would be not as helpful.
I traced the problem down to a voltage regulator, but I'm not sure if it's the source of the problem.

Here is a service manual for my receiver. If you want to follow please download.


On page 10 (SCHMATIC DIAGRAM - 5 - POWER AMPLIFIER SECTION) in sector 7E, you can see the voltage regulator 78M15A from jrc (named Q911) and another regulator 79M15A (Q912). I got the data sheet for the Q911:



It...

Re: Onkyo TX-8050 AV-Receiver no sound

Okay i will check that.

Hello,

I have a problem with my Onkyo TX-8050 Receiver. I got it from aftermarket and it was just delivered today.

It doesn't play music. There is no real output from:
pre-out
amp-out A and B
phones out

The only real sound I hear is a humming from the speakers when I play a song from usb or select a analog source. And when stopping and starting songs from usb or switching sources, I hear a crack from the speakers.

I tested with analog-input, usb and radio.

I know that there is a common problem with...

Re: New Members - please post your introductions here

Hello! I came here to get help with my AV-Receiver.