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Onkyo HTR500 Receiver - Page 2 Questions & Answers
Onkyo HT-R500 no display
Look on line for service manual. Display problem is usually traced to 1, or more, of 3 resistors in the AC supply to the display. It appears that the resistors are supposed to be 1/2 watt but the one I removed from my unit was only 1/4 watt. The resistors are mounted on a small board mounted on the front side of the main transformer - right most board. I had to unscrew the transformer to access the resistor. I looked at voltages coming out of the transformer and the the same voltages leaving the circuit board. There is a 1 Ohm, a .47 Ohm and another that supply AC voltage to different parts of the display. I found one resistor open. Replaced it and I now have an operating unit.
Jvc reciever turns on and then shuts off with overload
disconnect all speakers and inputs and try again. If it stays on, you have a short in one of the connections. Try adding them one at a time and see if it shuts off.If it overloads with nothing connected, you have an internal problem.
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