Yamaha receiver rx-v373 suddenly shutdown. No power ?

SOURCE: Yamaha RX-V596 Receive turns off after pressing Power

Sometimes the receivers turn off if the speakers are shorted in order to protect the AMP circuit. So try this - 1. Disconnect all cables (speakers), inputs from Tape Deck, VCR and other input devices), sub-woofers, rear speakers all. Except the AC power cord. Then turn it ON and see if it stays on. If it still has the same problem, then most probably your power circuit inside the receiver has a problem - like a shorted Capacitor or diode etc. Based on how technical you can be and what resources and time you want to spend, this is repairable. But based on the price of a receivers these days, it is not worth. Good Luck!

SOURCE: Yamaha AV Receiver RX V2400 - Shuts off

I've been having the same problem for 3 months. Checked connections, sent unit out for repair (3x), contacted Yamaha (no help at all) and still the same problem. I've spent over $350 in repairs and I'm very frustrated. I think I'm going to just buy a new receiver (not Yamaha).

SOURCE: Yamaha RX-V850 receiver

how can i hook a subwoofer into yamaha RX-V850

SOURCE: Yamaha RX-V995 receiver turns on & then powers off 2 seconds late

I suggest you run self diag.  press [FM/AM] key + [Input mode] key and press the [power/standby] switch.

ps prt = power supply problem
dc prt = shorted output or leakly cap in channel
tmp prt means to hot on heatsink

you'll likely have to measure the resistances of the output FETs to find a short, 

SOURCE: Yamaha RX-V1400 receiver powers off, in case it becomes louder

Hey, yeah that can be frustrating.

When you turn it up do you hear the relay or a clicking sound, then you turn it on and it comes back below the +2db?

Try unplugging All the speaker wires from the unit. Turn on the unit and listen for the click.
after the click, turn it up past the 2+ db mark and see if you hear it click or shut down. If it did not click off, then suspect a shorted crossover on one of your speakers.
2nd test is to plug in One speaker, and test it at high volume, it will not harm it. If it shuts off disconnect that speaker and try another. Only one at a time.
If it works at high volume, you need to isolate one of your speakers and i bet it has a shorted crossover that has been cooked. P.S. If one is bad, suspect they will fail at a later date.
If they all fail, use a friends speaker and try it before sending it to a repair shop.

P.S. i found one on ebay i think you can get for under $100 bucks in the box.

http://cgi.ebay.com/Yamaha-RX-V1400-7-1-THX-Select-Receiver-MINT-Condition_W0QQitemZ330311512027QQcmdZViewItemQQptZReceivers_Tuners?hash=item330311512027&_trksid=p3286.c0.m14&_trkparms=72%3A570|66%3A2|65%3A12|39%3A2|240%3A1318

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