Question about Yamaha RX-V496 Receiver
It was working fine before but when I connected (2) 8 ohm speakers after a short while it went off. I disconnected all wires and still will not stay on. the fuse is good.
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Posted on Jan 02, 2017
This set is getting old and is in the Archives section of the Yamaha consumer guide area. But, you can still download the owners manual if you need one. 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 Jun 17, 2007
SOURCE: Yamaha RX-V657 Zone 2
Suggestion by clarkent22
I called and spoke with Yamaha support staff (Chuck) who was very helpful. I was able to get my issue resolved hopefully this works for you too.
Couple of solutions:
1) Go into the Menu setting (Manual SetUp/Speaker Set) and make sure that you do not have Presence Speakers or Suround Back Speakers
2) Also in the Menu settings (Manual SetUp/Options/Multi Zone Settings) make sure that your Zone 2 Amplifier is set to "Int" (assuming you are not using external amp
3) Zone 2 can only accept an analog signal (not digital)... so there are two steps to this one. First, make sure that you either run only analog, or if you run digital and analog then you need to select "Analog Input" on the front of the unit. If yours was working earlier, my guess is that your input settings got switched to digital (or auto) You need to have analog set up for each specific external source (DVD, Cable/DTS, etc)....
4) This model receiver will only let you control Zone 2 with the remote control. You can power it on the receiver unit. But to select your source you have to press the Amp button, then the ** button. Then you control Zone 2 and you can toggle sources and adjust volume. (Check your owners manual for programing remote for zone 2.. think I pressed the "code" button and then 2999.)
Hope this helps... it worked for me If not call Yamaha they were very helpful.
Posted on Dec 05, 2007
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,
Posted on Feb 03, 2009
Solution on page 111 of the owner's manual:
"Connect the source component to the analog audio input jacks of this unit to play back the source in Zone 2 or Zone 3.
This unit does not output the audio signals input at the DIGITAL INPUT and HDMI jacks to the ZONE OUT jacks."
Basically you cannot use an HDMI input if you want to play in Zone 2 or 3. A simple solution is to add an extra audio cable from your PS3 audio output jack to an analog audio input jack on the receiver.
Posted on Apr 03, 2009
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