Yamaha R-N602 no sound no display

Question

Receiver

An audio/video receiver (AVR or home audio receiver) is a consumer electronics component used in home theaters that convert signals into sound.

crwdns2934591:020crwdne2934591:0 crwdns2934593:0crwdne2934593:0

Ticla @clarence2

crwdns2934065:0crwdne2934065:0: 25

4

1

crwdns2931729:0crwdne2931729:0: Kul 3, 2023

crwdns2933897:0crwdne2933897:0

Yamaha R-N602 no sound no display

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

crwdns2934081:0crwdne2934081:0 crwdns2934083:0crwdne2934083:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0

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.

crwdns2934271:0Nhl 31, 2023crwdnd2934271:0 AHW crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2933315:03crwdne2933315:0

crwdns2934051:0crwdne2934051:0

Ticla @clarence2

crwdns2934065:0crwdne2934065:0: 25

4

1

crwdns2931729:0crwdne2931729:0: Kul 4, 2023

crwdns2933897:0crwdne2933897:0

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

crwdns2934105:0crwdne2934105:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0

crwdns2889612:0crwdne2889612:0 0

crwdns2944067:08crwdne2944067:0:

Did you fix this issue? My r-n500 has just done the same thing.. standby led no display and no clicks

crwdns2934271:0Nhl 29, 2023crwdnd2934271:0 Mattc crwdne2934271:0

No,Its still broken.The warranty ran out 2 months ago.

crwdns2934271:0Nhl 30, 2023crwdnd2934271:0 Martin Grant crwdne2934271:0

@mattc5253 yes i did fix this issue, iif wou still need to fix it i will tell you how to do it, 0 cost

crwdns2934271:0Kul 21, 2024crwdnd2934271:0 Ticla crwdne2934271:0

@Ticla, please expand on the fix you applied regarding your Yamaha R-N602 AVR.

crwdns2934271:0Dzi 25, 2024crwdnd2934271:0 Eric S crwdne2934271:0

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.

crwdns2934271:0Dzi 25, 2024crwdnd2934271:0 Ronny Sundén crwdne2934271:0

crwdns2934275:03crwdne2934275:0

crwdns2934285:0crwdne2934285:0

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. — AHW
Did you fix this issue? My r-n500 has just done the same thing.. standby led no display and no clicks — Mattc
@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
@Ticla, please expand on the fix you applied regarding your Yamaha R-N602 AVR. — Eric S
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. — Ronny Sundén