I have a yamaha rx-v373 my speaker wires touched and it went off I have had this happen in the past and it came back on .well this time it did not I checked the fuse were the power cord is and it seem to be fine .this thing is brand new.does anyonehave any idea's please

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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SOURCE: We have a Yamaha RX -V565 and after listening to

chances are youve got a short at the rear of the receiver. look for frayed speaker wires touching the chassis of the stereo. use a flashlight. it only takes one tiny hair of a wire to short it out

SOURCE: Yamaha Amp RX-V1700B Receiver - no power to head unit

Go to the shop.

Testimonial: "Thanks - I came to the same conclusion myself - hopefully something simple and not too expensive."

SOURCE: Yamaha RX-V365 Receiver, Yamaha NS-AP2600S(BL) Speakers

I have the same issue. I took the speaker apart and tested with a meter and both the mid and tweater were wide open, in short blow out. Not sure what caused this but the speaker needs to be replaced.

SOURCE: yamaha rx-v371 shuts off 2 secs after turning on

Return unit to place of purchase, this is clearly a manufacture defect. The warranty will cover full replacement, do not allow them to attempt repair on the current item because you will be back and forth until warranty runs out.