Yamaha RX-V463 turns on and off after 3 sec

I don't think you can. The rx-v463 doesn't have bluetooth capabilities

Power it On without speakers connected.

If it powers up, reconnect speakers one at a time to find the cause.


If the problem persist even without speakers connected,

these unit needs servicing.

if you have any more questions let us know.

maybe the audio amplifier IC's have problems that's why the device protects himself from a bigger damage

http://www.ps2netdrivers.net/manual/yamaha.rx-v463/#manual

Disconnect power cord to your receiver and wait about 3 to 5 minutes before do this step

If you can find on the back side of your receiver use to have a small button recess hidden behind the back cover, use a small paper clip push this this button.
Another way if you can not find the button, disconnect the power cord about 15 minutes may reset all your programs in receiver memory.

Yes, there's a list in the manual for most popular brands and their remote codes.

http://www.retrevo.com/support/Yamaha-RX-V463-Receivers-manual/id/13748dj482/t/2/

Need some details. Everything you can tell us. Or you could pick through the manual.

http://www.retrevo.com/support/Yamaha-RX-V463-Receivers-manual/id/13748dj482/t/2/

Since Insignia and LG share compatible codes for digital-to-analog converters, review your remote control's manual for LG VCR codes as they should work to control the Insignia converter.

CODE 301 will turn off Yamaha but I don't have code to turn it back on.

yes it is only either a or b because the unit is designed to handle min impedance of 8ohms speaker. you can not use both at the same time