I can hear a click sound when I turn it on at the power point. Generally the Scene Button no.2 is lit when I first plug it into a power source. I can hold down the main power on/off button for 10-15 seconds and I can hear the unit click again.
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.
SOURCE: Yamaha RX-V1 Power
Got the same problem and did some searching.
Strange thing is that next day the amp works fine.
This is what I found on http://www.forums.hcsd.com.au/Blah.pl?m-1210733289/s-8/
SYMPTOM: The power cannot be turned on, or the protection circuit is activated to turn off the power.
CAUSE:
Fluid leakage occurs from the backup capacitor C633 0.047F 5.5V (C662
in the case of RX-V3000/DSP-AX2) on the Function PCB and causes a short
with the adjacent components and between patterns, resulting in
operation of the protection circuit. Fluid leakage tends to occur with
this capacitor particularly with high internal cabinet temperatures,
with or without the power on. Often, the leakage is only visible with
very careful inspection.
SOLUTION: Two types of backup
capacitors are now available with a longer expected service life. When
servicing, thoroughly clean the leaked fluid from the PCB and from
under any nearby components before replacing the capacitor. There are
models other than those mentioned above that use the subject backup
capacitor. Check them for fluid leakage and replace the capacitor as
needed.
PART(S): Old
Ref. No. Part No. Description Remarks
C633 or
C662
VT740700
V3860300 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* VU545000 ELECTROLYTIC CAP 0.047F/5.5V
Horizontal type
New
Ref. No. Part No. Description Remarks
C633 or
C662 WD294400 ELECTROLYTIC CAP 0.047F/5.5V Vertical type
* WD292000 ELECTROLYTIC CAP 0.047F/5.5V Horizontal type
SOURCE: yamaha rv1000
ok yu problem has to be with the protection system before you burn it up it collapses to protect the whole system.....go direc to the thermal cut off devices on the main output and then to the power system......
SOURCE: rx-v563 backround music much louder than people when watching tv
I would check your center speaker wiring and setting. Then switch to a different audio setting (pro logic, theater...)
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,
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