Re: Yamaha RX-V667 no signs of life

Just to close this out, I was unable to trace the exact fault so decided to buy a new receiver (Marantz NR1609). Enjoyed trying though and feel that I took it as far as I could.

Re: Yamaha RX-V667 no signs of life

Thanks again for quick reply. All coils are tiny SMD type.

I've checked whole board, in particular around the 12 ICs that feed off the +5.5V line, and nothing is getting hot. Perhaps that's because I'm reading such a low voltage across the +5.5V inputs when everything is connected? Maybe the standby PSU can't start up?

Resistance of +5.5V input on the Digital board to Ground is around 0.7ohms with the power off. With the power on it fluctuates, mostly between 5 and 35 ohms.

Re: Yamaha RX-V667 no signs of life

I've now replaced C3707, C3708, C3710 and C3711. Unfortunately there is no change, receiver is still totally unresponsive.

I read 21V across C3708.

I measure 5.5V across a 10ohm resistor briefly attached to the standby supply (had to use a lower wattage resistor and the supply happily cooked it), so I think the standby supply is OK.

Again, with everything connected I get basically 0V across the 5.5V supply on the Digital board (with an occasional spike of up to 1V), with the 5.5V and Ground inputs at CB73...

Re: Yamaha RX-V667 no signs of life



Thanks for the quick reply. Hadn't thought of that. Think I should have spares of those values of capacitor in my toolbox so will have a go next weekend....

A few weeks ago my trusty Yamaha RX-V667, which I've had for 9yrs since new, stopped working without warning. We have all our HDMI sources connected to it, and these could no longer be accessed. The standby light has gone out and neither the remote or power button can start the receiver. When I press the power button I cannot hear any relays.

Before this, the amp has never put a foot wrong and sound quality was perfect.

I have downloaded the service manual from here:
[URL="https://elektrotanya.com/yamaha_rx-v667_htr-6063_rx-a700.pdf/download.html"]https://elektrotanya.com/yamaha_rx-v667_htr-6063_rx-a700.pdf/download.html[/URL]...

Re: New Members - please post your introductions here

Hi, I'm Andy. Found this forum in the process of trying to fix my Yamaha AV Receiver.

Love fixing and upgrading things like old computers and audio equipment, but I'm in over my head with this one!

Used to work in a Maplin Electronics on Saturdays back when I was a teenager. Shame I can't buy components on the high street anymore :-(