Re: Onkyo tx-nr509 receiver no power



Hey, I replaced the main relay and now the unit clicks a few times when I plug it in, but there is no response to the power button and no display.

Any ideas what my issue is?...

Re: Onkyo tx-nr509 receiver no power



The relay appears to be bad, Thanks!...

Hello, I recently started troubleshooting my onkyo tx-nr509 receiver that refuses to turn on.

I suspect the issue is the power supply, but all of the capacitors appear to be fine. The output I measured does not match the specifications on the board, however. The +12VD_ST and +10VS pins on the output both measure around +15v referenced to the GNDDG pin. Fuse is fine, primary side of transformer is receiving 115v ac, output of secondary is about 12.3v ac.

The output voltage has no ripple, but drops significantly when i add a resistor across the output to about 5v with...

Re: New Members - please post your introductions here

Hey,

I'm having some trouble with an Onkyo receiver that won't turn and hope someone here can help me out.

I'm an electrical engineering student and circuits where my favourite in high school, but everything I know seems to go out the window once I'm trying to understand an entire system of boards.

Thanks!