AVR 630 powers up and 5 sec after that powers itself off

Do a Power Reset.
1. Turn off TV.
2. Unplug the power cord of the TV from the electrical outlet.
3. Let the TV remain without power for 60 seconds.
4. Plug the power cord back into the electrical outlet. (If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.)
5. Turn on the TV.
If issue persists after doing the steps, reset the TV to factory default settings.
1. Turn on the TV.
2. Using the supplied remote, press and hold the UP arrow button.
3. While holding the UP arrow button press the POWER button on the TV itself.
4. When the TV goes off, release the POWER and UP arrow button.
5. The TV will turn on by itself and the initial setup screen will be displayed. Just follow the on-screen prompts to finish the setup.
Sony KDL 46V5100 random shut off 15 20 sec

There's an electrical problem! The unit shuts off to protect itself. the relay sound is normal and is part of the power supply - good quality amps have them. I suggest taking it to your local repair shop.

Change the hdmi cable and try. If not then you have an hdmi fault module.

Does the hum go away when you change inputs?

Disconnect all speaker wires on back and then turn on. If it happens again, it's most likely a power supply problem. If it doesn't happen again, it was probably crossed speaker wires.

Go into your OSD (on screed display).

Go to multiroom.

Change the SB AMPS from MAIN to MULTI.

Make sure you have only analogue sources, it will not amplify digital inputs for the MR.

You have a loose ground on the outlet. check it out................

One other thing, you have bought the worst, cheapest design and the least protective product in the world without AVR technology.
I am a power quality engineer and I loath APC quality.

www.storminproteciton.com

check out some real UPS that might do better.

if it goes off even with no sound, system is put on stndby protection mode. something wrong with your output section. busted power output xtors of IC.

Psgolfer ...I pretty shure you dont need that. It just needs to be reset, its in protect mode.....hold the power button down and the A n B speaker buttons down at the same time for 30 sec.....ok , Radricktip