Pioneer VSX-1022-K won't turn on

[rievax_60]

Re: Pioneer VSX-1022-K won't turn on

The voltages on each side of the resistor should be the same after a reset while the relay and zenner are removed.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

What that means if it's not the same?

[rievax_60]

Re: Pioneer VSX-1022-K won't turn on

What that means if it's not the same?

It means there is still current flow through the transistor.
With no relay and zenner in circuit, it only leaves those two diodes in series that might be leaky. Both would have to fail to cause a problem, unlikely.
Actually most of the small glass diodes and zenners I find faulty is because the leads have rusted and cracked the glass body.

Had you removed the zenner from across the relay coil?

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

The zenner is a glass type and it is removed.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

You were right, both sides show 6.57V.

[rievax_60]

Re: Pioneer VSX-1022-K won't turn on

The CPU_ST_VCC rail is being heavily loaded at the same time the relay is supposed to be on. We will see what happens when the new relay is fitted.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

Check out how it looks the relay inside.
First picture is the little contact that is pulled in by the coil.
That rough step was touching the coil.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

I have received the relay.
Installed it, had to do a reset, but after that it turned on!!!
It's still not fully put together and it shows demo mode on the display with HDMI blinking.
I will have to look at it much better after Christmas, but at least shows some life.
Every time that I turn it on, it turns on and I can hear the relay click.
I will have to figure out, what's up with that demo mode.
I'm wondering about these receivers, that are sold broken. All of them may have the same problem if they don't turn on?
Most likely, Denon has to have the same issues, if this relay is sold as Denon part.
I may give it a try to another unit, to see if it has the same issue.
I will let you know about the outcome.
Thank you for all of your help.
Have a Merry Christmas!

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

I have "played" a little bit with it today and I have realized that the remote it's not working. It looks brand new and when I look at the IR LED with a camera, the IR LED doesn't show any life.
Another remote on Ebay, it's almost $40.
An IR LED can be checked as a normal LED? It should light up and I should be able to see it through a camera?

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

That was a simple fix, bad contact at the batteries.
There is still a problem with the receiver. I don't know what, but I suspect other relays may not turn on.
I can't get any sound or HDMI video out of the receiver. Amp feels cold at touch.

[rievax_60]

Re: Pioneer VSX-1022-K won't turn on

There should be a second click of the speaker relays pulling in about 5 seconds after the receiver turning on. If there is any serious fault, the receiver should be reporting it in the display.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

I can hear the second click and I can change the speaker settings too, from A to B and a third option(I don't remember which right now).
I can't seem to get into settings. I can switch sources, it seems like it's reading the USB drive, I can tune to different radio stations, but I can't hear any sound.
I'm keep thinking, that maybe I forgot to connect something back, but I don't see anything wrong.
I guess, I should check some voltages, the 12V going to the HDMI board and some voltages at the amp. Not sure which one though. The receiver is fully assembled though.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

Not sure what I have done, but now I have sound on all the channels.
Most likely I have an 8 Ohm speaker and I didn't have the volume high enough.
Only around 40 I could hear some sound.
This is good news so far.
I will have to try with a TV. With a monitor, I didn't have success. HDMI input it was showing that it goes into power saving mode.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

It's all working great!! I can't believe that we managed to fix this one. We were ready to give up.
Thank you very much rievax_60, for all your help and patience!
Possibly I will give another try on one of these or similar model, to see if this is a common problem with these receivers. Denon should have the same problem, since this relay it was a Denon part number.
Now, I need to go back to replace those parts in that Yamaha receiver and hopefully it won't blow up again.

[mmartell]

Re: Pioneer VSX-1022-K won't turn on

Very cool thread. Kudos to both of you on your perseverance.

[budm]

Re: Pioneer VSX-1022-K won't turn on

Great job fixing it you guys and good for not giving up, that is how you learn.

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

Can you guys believe that a 2012 model receiver has a rusted relay in it? The relay, it's a sealed relay also.

[budm]

Re: Pioneer VSX-1022-K won't turn on

It looks like it has contact resistance which caused the heat built up that finally destroy the relay contacts. I do not know how much in-rush current this relay contacts are exposted. Is this the standby relay that supplies the power to the main power transformer?

[tibimakai]

Re: Pioneer VSX-1022-K won't turn on

Yes, it's the standby relay.

[budm]

Re: Pioneer VSX-1022-K won't turn on

So it has to be able to handle high in-rush current when the power transformer and the large filter caps are charged up when power is applied. I am sure there are lots of these units out there with the same problem. They will have to use two relays, one to supply the power to the in-rush current limiter and another relay to bypass the limiter like what they do on better built TVs.