Question about Yamaha RX-V2700 Receiver
Greetings! My new RX-V2700 shuts off all by itself... which it turns out is really annoying. There's no rhyme or reason to it. It'll go days without a glitch, then shut off three times in an hour. It's mostly used for home theater, so generally when it shuts down it's running a DVD or cable TV input. I don't play it at excessive volumes (no, really). I rarely play it above "-24" for what it's worth. The volume never seems to be a factor anyway. Nor does how long it's been running. Sometimes it shuts off after 15 minutes. Other times it'll stay on all night (I've been leaving it on unattended with nothing playing -no sound output at all- overnight just out of curiosity... will it stay on or not? 99% of the time it stays on). It doesn't happen during "loud" passages. It's not like it suddenly can't handle an explosion or laser blast... it's just as likely to happen during quiet dialogue as it is during the opening of "Revenge of the Sith." It just quietly clicks off at random moments. There are no warnings or error messages. I thought it was the crappy speaker wire I had for my surround speakers. I replaced those runs with 10g wire, and it ran fine for a week... then shut off three times over 36 hours of non-continuous use. Literally, it ran perfectly for 5 days, then one evening shut off twice in an hour (while watching "The Verdict," a film whose loudest sound effect has to be Paul Newman slamming a phone down); ran fine for another 24 hours, then shut off during an unattended nighttime test run. Before I changed the speaker wire, I left the surrounds disconnected for 4 days. The receiver didn't shut down during that time... but again, it's gone just as long with them connected, so I don't know that this means anything. The receiver is in a cabinet with an open back. It has over two inches of ventilation space on top; an inch or so on either side. I've double-checked all of my connections, but that being said, I'm gonna' check them again. It does not seem input-specific at all. Speakers are all set on "Small" (despite the defaults going to "Large" after running YPAO); they're all 8ohm, and the receiver is set accordingly. Since there's no internal fan, I'm not sure what to do to help it run cooler... raise it up some? Help it draw air in through the bottom? I can't see the point of putting a little fan near it... it may cool it off, but I don't want to blow dust into the box! It is as it shipped. I haven't done any firmware upgrades, nor have I done a hard reset after personalizing the settings. Oh! When it shuts off? It almost always comes right back on. On two occasions (since February) it's been hard to get it to come back on... but even then, after unplugging it and waiting a few minutes, it came on and ran fine for days again. This behavior seemed to get worse after my recent vacation. I use the unit every day for at least a few hours a day. Obviously, I didn't use it at all while I was away. Upon my return it shut down more often... but after the point I disconnected then changed that speaker wire? It mostly ran fine, and continues to run better than it did before I made that change. ANY help anyone could offer would be greatly appreciated! While I obviously don't relish the idea of taking it to a service center, I would... but the only ones w/n driving distance have terrible reputations! Thank you!
I know for a fact that there are 100's of solder connections in this unit but chances are very high that there's one or two places that are losing their connection do to poor solder.
I've been troubleshooting for over 25 years and this is the Numero Uno problem when things such as this occur.
Find someone qualified to open it up and take a good look at it.
Posted on Feb 24, 2008
I've had the rx-v2700 shut down during laser blasts to sudden thunder claps. i went into the sound controlls''option'' and set it on zone 3 amp. zone 3 variable, ''messed'' around w/the vol. and init vol while listening at -29.0db. it seemed to work well, tho it did shut down during some star wars passages, but i was able to turn it on w/remote. i've never exprienced a shut down as you described, and my unit has been on 24/7 for 2 yrs.
Posted on Nov 25, 2009
Same exact problem - - one time i left it disconnected over 24 hrs and it started working again-
now again a year later its happening again-
trying to disconnect everything from ever connection and see what the !@#%!@#%!@-- nope same problem
saw this elsewhere:
If it is going into protection mode even when there are no speakers connected OR when the sound level is very, very low or zero it is not good news.
Yes, unplugging the line cord will cause the protection system to reset itself. But, if it shuts itself off again soon after rebooting it is a sign of bad grease in the output stages -- in all probability.
Let me explain: The audio output transistors are mounted to a large heatsink which keeps them cool during operation. They are electrically isolated from touching the heatsink by an electrical insulating washer. But, in order to keep them cool and allow for good thermal conductivity of the heat generated by the output transistors the washers are treated with a heat conducting grease. Over time this grease will dry out and lose its heat conductivity ability allowing the temperature of the transistors to rise; as the heat goes up they conduct more current and cause the protection system to activate and shut the set down (in order to avoid damage to the set).
That is the most common cause of your symptoms. However, there are several other possibilities, but I give this explanation a 90% probability based on my experience.
Posted on Sep 20, 2009
My RX-V2700 started with all the above problems and just got worse and worse.
To the point it would not turn on at all.... it was completely DEAD.
Took it to a Yamaha Service agent, surprisingly it worked ok for them. They keeped it for 3 weeks, doing tests.... In the end i picked it with a $230 bill and one replaced Poly Cap on the Sub Power PCB. Took the unit home, plugged it in, it worked ok... That night, the unit faulted while on stand-by... and faulted bad enough to trip a 16A circuit breaker in my switchboard. Now in the morning, not more than 12 hours after i brought it home, the unit is completely DEAD again.
Such a shame, and waste of money and time!!!
I agree with the above, it would be so easy to have a dry joint or fault on the PSU somewhere....
I think the worst part is, not even the Yamaha Service Departments know what the issue is...
Posted on Sep 04, 2009
I have the same problem with my unit. It stopped altogether on boxing day.I returned it to the supplier and they say it is due to a connector in the power supply but time will tell.
Posted on Dec 28, 2007
These sort of issues are almost always down to hardware faults; occasionally firmware issues. Sometimes a dodgy power supply can be the problem, spontaneously not providing enough power to keep it running for a moment - and then catching up milliseconds afterwards (causing it to turn back on). Heat is always an issue to check for, your best bet, without taking it apart is to try and cool it externally (even if it looks stupid having an office fan pointed towards it) and see if you have the same problem. Check for firmware updates (if there is such a thing available for this device). If this is to no avail, check out your warranty status as this would most likely be covered under it.
Posted on Sep 06, 2007
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