How to Troubleshoot a Pioneer Receiver Power Supply

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Pioneer receivers plug directly into an AC power supply rather than use an adapter, like some other audio devices. This is because Pioneer receivers operate on AC power, rather than low voltage DC--they don't need to be converted. Problems encountered with a Pioneer receiver's power supply can be related to the receiver not switching on and also to the receiver shutting down suddenly. These kinds of issues can be corrected by following some troubleshooting steps.

  • Disconnect the power plug from the outlet, wait a moment and plug it back in again if the Pioneer receiver will not turn on. You can identify complete power loss, because there won't be any lights on the receiver at all. If you see a light, or lights, the issue is not with the power supply.

  • Plug the Pioneer into a different wall plug if the receiver still won't turn on. Try to use one you know works, say one used by another component that has lights illuminated on it when you press "Power."

  • Open the home's circuit breaker panel or fuse box and look for tripped circuit breakers or blown fuses. Flip the circuit breakers, and replace any blown fuses, and try the receiver again.

  • Look at the receiver's rear panel, and see if any loose strands of speaker wire are touching the rear panel. The speaker wire should be covered in plastic sheath right up to the terminal block. Any exposed copper wire touching the receiver outside of the terminal can cause a short and make the power supply trip or fail.

  • Wait a minute if the Pioneer receiver shuts down suddenly before turning it back on again. Overheating through excessive volume or blocked vents will cause the power supply to shut down the Pioneer receiver. It will stay shut down for at least a minute. Press the power button to turn it back on again.

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