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This issue you're experiencing with your Yamaha RXV-475 receiver can be caused by a few different things. Here are a few steps you can try to resolve the problem:
Check the power source: Make sure the power source for the receiver is stable and not fluctuating. If the power source is unstable, it can cause the receiver to reset itself.
Check the connections: Make sure all the connections between your components and the receiver are secure. Loose connections can cause the receiver to reset.
Update the firmware: If the problem persists, try updating the firmware of your Yamaha RXV-475 receiver to the latest version. Updating the firmware can fix bugs and improve the performance of the receiver.
Reset the receiver to factory settings: If all else fails, try resetting the receiver to its factory settings. This will erase all the settings and return the receiver to its default state.
If none of these steps resolve the issue, it may be a hardware problem and the receiver may need to be repaired or replaced. You should contact Yamaha support for further assistance.
Try holding the 'tone control' and 'info' buttons while you hit power. If it is locked in protect mode, this will release it.. If it turns right back off again, it needs servicing.
Check it without speaker connection. If the set does not go to protection mode, check all the speakers by connecting one by one at a time and switch the set ON; to find the faulty speaker. If the set goes to protection mode even no speaker connected, check and replace damaged components at its audio output section circuit. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
The problem can be the cable or speakers or RX-V463 or settings. Need to check one by one.
Set the RX-V on DTS or Dolby Digital
1) Check Cables - connect the 2 (surround) cables from RXV's Centre Out to Centre speaker. If the Centre speaker works, then cables are ok.
2) Check speakers - Connect each Surround speaker to RXV's Centre out. If it works Speakers are ok.
3) Check RXV - Set it on DTS or Dolby Digital
Connect RXV's surround out (one at a time) L and R to the Centre speaker. If there is no sound, the problem could be RXV's settings (I need to read the manual).
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