Yamaha RX-V671 in protect mode

[tibimakai]

I have picked up this receiver and I'm trying to repair it.
I have found already some transistors and diode that are blown.
I haven't get around yet, to check all the components, just the semiconductors and the Emitter resistors. The resistors are fine.
Digikey has the final transistors.
I'm having problem finding these components, like:
2SD2705S
2SA1770
2SC4614
MTZJ5.1C zener
Any pointers, or equivalents that I could use?
Any help would be appreciated.

[tibimakai]

Re: Yamaha RX-V671 in protect mode

I have found 2SA1770 and 2SC4614 at Mouser.

[shaunbt123]

Re: Yamaha RX-V671 in protect mode

Is this one of the parts you need. (MTZJ5.1C zener) . it also lists an alternative part.


https://www.encompassparts.com/item/...T2/Zener_Diode

[tibimakai]

Re: Yamaha RX-V671 in protect mode

It seems like the right part. Thank you.

[tibimakai]

Re: Yamaha RX-V671 in protect mode

Just an update, I have replaced those components and the receiver still didn't want to show any life.
Then I thought maybe I should reset the receiver to clear the protect mode error and then it turned on and since then it's working great.
It's a very nice receiver.

[Andrew F. Ali]

Re: Yamaha RX-V671 in protect mode

I have a receiver like this.
How did you reset this unit?
What procedure did you use??

[tibimakai]

Re: Yamaha RX-V671 in protect mode

I don't remember, but here it is the service manual:
http://elektrotanya.com/?q=showresult
After clicking on it, you will have to wait like 15-20 sec. and a Get Manual will appear below the service manual's picture.

[Andrew F. Ali]

Re: Yamaha RX-V671 in protect mode

Thanks, Man
AFA

[Brianwitty]

Re: Yamaha RX-V671 in protect mode

I'm about to start work on one of these- first post noob here guys sorry- I have worked on a number of tube amps but this will be my first modern solid state av receiver. There is no sound. It was pushed hard in a home theater system that the speaker wires got compromised by mice. It first lost some speakers, then all. I'm guessing all of the output transistors need to be replaced, but have not tested it yet... Any advise?