Yamaha RX-V459

[cata82]

Hello guys,
I have an amplituner Yamaha RX-V459, i start it and after 1-2 seconds it stops straight in OFF, no stand-by.
I entry in self diagnostics with panel keys "input channel" + "multi input channes" + power ON and i have an error protection-DC PRT: 023H, stay like this and i can acces all off service meniu, he does not stop.
All the final and pre-finals transistors are good.
Where to start, what to measure?
Thank you.

[R_J]

Re: Yamaha RX-V459

Check for DC voltage on the outputs, Check at the center of R1149, R1150, R1151, R1152, R1153 & R1154 (white ceramic resistors) in output citcuit. That should tell you which amp section has the problem, the voltage should be near 0 volts

[cata82]

Re: Yamaha RX-V459

Thank you very much for your answer R_J, i will return with the measurements.