My Yamaha receiver RX V463 is immediately turning itself off after I try and turn it on? (both with remote and on the receiver itself)

SOURCE: Problem is starting Auto Setup on my Yamaha rx-v463 receiver

You need to press the AMP button before you press the ENTER button. Always press AMP first when selecting menu, enter, any surround mode, or one of the amp functions in ORANGE above the green numeric buttons.

Got this from Yamaha.

BG

SOURCE: Direct TV remote code for yamaha rx-v463?

It is 30376. The trick to discovering, is to turn the receiver off, first. Then it will power on when you input mute/select 30376. Then you can program the DirecTV remote to adjust volume (in AV2 mode only or in all modes). However, it will only power up the receiver. It has to be turned off with the original remote or at the receiver itself.

SOURCE: The unit does not work

check the standby power supply first and then the main power supply.also check the output transistors and fuses your problem is in one of those points, normally the standby transformer goes bad, it is the small one right next to the big one.
good luck

SOURCE: Need a code for my Comcast Universal Remote

30176 is the code you need . Press Aux and then hold setup until Aux lights up. Enter code. If you want the remote to control the receiver all the time, press Aux and then hold setup until Aux lights up. Enter 993 then press Aux. Aux will flash, now press Cbl and Aux should light up when you use the volume.

SOURCE: Code for Time Warner Synergy V Model RT-U64CP remote

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