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I have a Yamaha R-N602, plug in, When I press front power button the standby indicator come ON, pressed remote power button. Nothing happened. …no sound no display.
Normally at power-up I use to hear 2 relay activate when the receiver was working, but now nothing.
Look like the power supply deliver a nice 5.5 VDC but this is the far I could go for now.
Any idea are welcome. Thanks
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I think I found the problem. !!!
There is a small circuit bord attached on the output transistor heat sink .
On this small bord there is "integrated-circuit temperature sensor"
I made a quick Ohms test and it looks completely open.
Does somebody here know if I could bypass this sensor ?
LM19 2.4V, 10μA, TO-92 Temperature Sensor
Thanks
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Did you fix this issue? My r-n500 has just done the same thing.. standby led no display and no clicks
No,Its still broken.The warranty ran out 2 months ago.
@mattc5253 yes i did fix this issue, iif wou still need to fix it i will tell you how to do it, 0 cost
@Ticla, please expand on the fix you applied regarding your Yamaha R-N602 AVR.
Hi!
I have fixed two R-N602 with the same problem.
The main circuitboard was broken.
Look at the board that is just close to the heat sink if it is broken.
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Hello,
On my RN-602 The Temperature Sensor (IC) was open.
Look for a small board touching the heat sink (LM19 2.4V, 10μA, TO-92)
I dint replace the transistor, I just bypass it by jumping (+Vs 3.3vdc et V-out)
You also need to do a reset.
While pressing DIMMER and PRESET buttons, press the power button to activate the self drag mode.
Full drawing here.
https://www.manualslib.com/manual/186672...
Hope this helps you.
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which two wired did you put together-jumped?
Thank you Ticla, much appreciated!
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hello
can you tell me which wires did you jumped?
3.3V and ??..
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Replying to mattc: When I sent my unit in, both Yamaha's tech team, and the authorized dealer whose tech also checked it, agreed that my R-N602 was water-damaged, as they found corrosion in two spots on the circuit board. As this unit was nowhere near any water source -- no roof leaks, no nearby food or drink -- the only possible explanation is mice (I live in the the country) -- though this never happened to its Onkyo predecessor, which occupied the same spot for 15 years. Very expensive fix.
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