20 Most Recent Yamaha RX-V673 Questions & Answers

Try holding the 'tone control' and 'info' buttons and press power. This will unlock it if it is protect mode. If it turns back off right away, then you most likely have a problem in the amp circuit which needs to be repaired.

verify that the optical cable (or the tv optical output) is not the problem. try using a different audio source with optical output such as a cd player if you have.

Hi, is there any solution. Having same Problem here :-(

The only thing I can suggest is this article from Yamaha's website. http://faq.yamaha.com/us/en/article/audio-visual/av-receivers-amps/rx/rx-v673_black_u/10296/7321

First, try holding down the Main Zone power button for more than 10 seconds in order to initialize and reboot the unit. If that doesn't work, I think a visit to the local Yamaha service center is needed.