Yamaha RX-A3010 working, no sound output

[budwich]

Re: Yamaha RX-A3010 working, no sound output

so what does the "status screen" display on the tv when you have a signal input. There is data about the type of input, bit rate, etc...

[FrozenHaxor]

Re: Yamaha RX-A3010 working, no sound output

I sincerely apologize for not responding in such a long time, kinda abandoned the unit partially disassembled under the table. When it's turned on I can hear exactly 5 clicks. 3 clicks shortly upon powering on, then 2 clicks few seconds later (the ones for speakers I assume). Pure direct mode does not produce any sound either. This unit I find quite difficult to work with, packed tight and quite heavy.

I have checked bias voltage of all the output pairs, all of them have 10-15mV of bias at the calibration connectors, so the current between the pairs seems right. This appears like pre-amp / control section problem to me.

How could I safely inject it with direct audio to the amp section without destroying it any further? I really find this unit intimidating to repair, there are so many stacked "inner" boards with no access for any measurements.

Pleas upload the pictures of the rear panel also.

Here you go:

Do you get audio at the line out jacks?

Only a flat line on the scope, with small noise. No audio coming from any of them.

The OP doesn't appear to have indicated that he checked all types of input sources (ie. tuner, coax, etc) as suggested

There is no audio on any type of input. All functions work but it's like you don't have any speakers connected to it.

[budwich]

Re: Yamaha RX-A3010 working, no sound output

I suspect that the OP found the problem... maybe since he hasn't come back. Its possibly a "finger problem"... :-) As with most "stuff" these days, setup can be "less than straight forward". I have a "brother" of this one, an A1010. There are lots of options that need setting and if you aren't use to them, it could be difficult. In this case, there is an option in the "option" menu for audio. It can be set to "auto" but it can also be set to a specific "type/mode"... those being hdmi, coax/optical, analog.... those allow for the video to show one thing while the sound can come for other input sources. The OP doesn't appear to have indicated that he checked all types of input sources (ie. tuner, coax, etc) as suggested to ensure what the sound issue is or isn't as he appears to indicate a problem with "hdmi". Further, there is a some "status" screens that indicate how the input has been setup, in particular what signal is being received and its characteristics (ie. channels, bit rate, etc). Those would be helpful with this problem.

[madan1]

Re: Yamaha RX-A3010 working, no sound output

I have an older model - A1010.. if I remember correctly, somewhere here should be a post/thread about troubleshooting it... anyway - long story short - bad power supply on the mainboard ( the top one ). The voltage rails were there, but too noisy which was causing the ICs not to work correctly... there was some functionality, but again no sound, no internet, etc.
Since checking that rails is really easy ( no disassembling ) I suggest you to start from here..


edit: here is the thread, but not much useful info there.. indeed I did not even update it with the final fix ( replaced some smd inductors ) and I guess I will not update it just to avoid reviving it - https://www.badcaps.net/forum/showthread.php?t=61960

I guess the most useful thing for you from there is that the multichannel input and the direct/pure mode do not go through the mainboard.. so you should check if you get output by using them... still you should check the service manual to see if this is valid for your unit.

edit 2: those AVRs have very good service menu with useful troubleshooting options... like checking the data transfer between the ICs

[budm]

Re: Yamaha RX-A3010 working, no sound output

As suggested, do you hear the speaker protection relays click on about 5 seconds later after turning on the receiver?
Do you get audio at the line out jacks?
Pleas upload the pictures of the rear panel also.

[jneupauer@sbcglobal.net]

Re: Yamaha RX-A3010 working, no sound output

this amp has appears to have speaker relays.
the amp should click relay after time delay.
white flat resistors on each side of amp probably should have 0 volts on center pin. not 0v.. bad channel output circuit.
I would start there

[frankusb]

Re: Yamaha RX-A3010 working, no sound output

Have you tried the "pure direct" mode?

[petehall347]

Re: Yamaha RX-A3010 working, no sound output

try injecting a signal direct into power amp inputs

[tibimakai]

Re: Yamaha RX-A3010 working, no sound output

I don't know anything about this receiver, just an idea I'm throwing out there. Recently, with somebody's(TJmotter) help on another forum, we have found a Mute IC, that was shorted, an op-amp IC had a hole in it, also a bunch of smd transistors were bad. This was an Onkyo receiver though.

[FrozenHaxor]

This is gonna be a fun one, here we go.

AVR powers up, displays menu over HDMI correctly, all settings work etc.

I can switch the inputs and adjust the volume level, but none of the speakers will produce any sound whatsoever. Last time I came across such problem it was a faulty Texas DSP BGA chip but this AVR is much different in construction.

Did anyone come across this issue? Where to go on with this? It has some really weird power stages as well, never seen that before on any AVR.