Question about Yamaha RX-Z1 Receiver

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RX Z1 lose sound, turn off/on, 2nd click not happening, no sound

I had the other problem hear and it went away. AFter 4 years of heavy use, about 8 mo ago, sound went off, turned unit off, back on and walla 'I got sound'. I didn't use it for months and swapped optical cable with cable box optical and got sound. Now, 3 months later, when the sound goes off, and I turn unit off and then on, I get the first click in the circuitry, but the second and the speaker indicators do not turn back on. I am ging to disconnect all speakers and see if the unit cycles with speaker indicators coming back on. If so then I may have a speaker drain issue. So, I will add pairs of speakers and see if the units cycles. If at some point it does not, then I may have a short on that channel or a speaker problem. To rule out the speaker I can put them on a working channel and see if they fire up. It will be time consuming. bjmallard_at_aol_dot_com for any similar issues and comments.

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SOURCE: Yamaha RX-V1500 Shuts down after 2 seconds

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-1500 av receiver

some times the speaker cables are touching, double check, I had this with my amp and it kept turning itself off

Posted on Jun 25, 2008

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SOURCE: Yamaha Receiver (rxv3000) has intermitent power problem

Most, but not all of the voltage regulators are cooled by the same heat sink
that the output transistors are attached to and get overheated when you crank up the volume. Although this unit has a cooling fan, after some time the heat sink gets HOT and will age these parts. There are also a group of three current limit/ voltage drop resistors supplying one regulator that will give up too. This is not for most DIY folks. Repairs are available in certain parts of the country. I know of one you can ship the unit to and get it fixed like I did.

Posted on Sep 17, 2009

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SOURCE: Yamaha HTR-5940 won't stay on after thunderstorm

I have the same problem as you but no thunderstorm. Mine happened after I connected speakers with the unit operating and had a speaker wire short at the back of the unit. Got a whiff of smoke and now I have that DSL1U unit clicking same as you. Did anyone suggest a fix?

Posted on Apr 04, 2010

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SOURCE: static crackle on yamaha 6030 in 5.1 ..static

I have this exact same problems. It depends on the signal format somehow I've noticed. It's extremely frustrating. I'm wondering if we just got a bad 5.1 processor?

Posted on Jul 30, 2010

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