Pioneer vsx-1021-k get picture no sound

[Packard93]

Re: Pioneer vsx-1021-k get picture no sound

By the way, did you try to reheat the ball soldered chips on the hdmi board?

The schematic shows that analog input goes through this chip BD3473KS2 but not the dts chip is not used during analog input . I think this chip controls switching of the inputs from being enabled.service manual --->https://drive.google.com/file/d/0Bzc...ew?usp=sharing

[budwich]

Re: Pioneer vsx-1021-k get picture no sound

As I suggested, feed an analog signal in, plug in your headset, select the appropriate input, do you hear the sound? Analog sounds are basically routed to the headset thru an input "selector".

Forget the HDMI / digital inputs for now.

follow the troubleshooting suggestions here and those basically outline in page 24.... THEY START WITH HEADPHONES! Get those working and go from there.

As a last resort, enter the service menu (page 34) and look at the possible errors that can be displayed.

[madan1]

Re: Pioneer vsx-1021-k get picture no sound

The schematic shows that analog input goes through this chip BD3473KS2 but not the dts chip is not used during analog input . I think this chip controls switching of the inputs from being enabled.service manual --->https://drive.google.com/file/d/0Bzc...ew?usp=sharing

check the denon no sound thread here.
basically all functions are controlled by the cpu and if it cannot communicate properly with the other chips such things happen...
many onkyo avrs have problems with the dsp chip and in many cases they start working again after reheating the chip.
Here are discussed similar issues with pioneer avrs http://www.avsforum.com/forum/90-rec...listening.html

[tibimakai]

Re: Pioneer vsx-1021-k get picture no sound

Unfortunately, I can't help you much, I don't have to much experience diagnosing electronics. I'm fighting, with my 1122k as well.
I have removed the HDMI and power board, from the case and somehow I have managed, to probably brake it even more. Now, I can't make it, to at least the MCAA LED to blink anymore, after a reset.
I still have a 3.3V short somewhere, which I don't know how to find.

[Packard93]

Re: Pioneer vsx-1021-k get picture no sound

Unfortunately, I can't help you much, I don't have to much experience diagnosing electronics. I'm fighting, with my 1122k as well.
I have removed the HDMI and power board, from the case and somehow I have managed, to probably brake it even more. Now, I can't make it, to at least the MCAA LED to blink anymore, after a reset.
I still have a 3.3V short somewhere, which I don't know how to find.

what board is the 3.3v short on . Well mine works perfectly on power . I think mine is on the hdmi board . cause this chip VOLUME AND INPUT SELECTOR
BD3473KS2 is chip that both digital sound and analog but there both on the hdmi board where the sound called the D-MAin assy in service manual and it affects the bottom MAIN BOARD WHERE the output goes to speakers. .I just dont have a oscilliscope at my disposal. Ive seen your problem with the no power problem posted and there is alot of diagnosis to fix your problem. TYPE YOUR PROBLEM then site:www.yoururl.com for specific web page searches .

[Packard93]

Re: Pioneer vsx-1021-k get picture no sound

Unfortunately, I can't help you much, I don't have to much experience diagnosing electronics. I'm fighting, with my 1122k as well.
I have removed the HDMI and power board, from the case and somehow I have managed, to probably brake it even more. Now, I can't make it, to at least the MCAA LED to blink anymore, after a reset.
I still have a 3.3V short somewhere, which I don't know how to find.

what board is the 3.3v short on . Well mine works perfectly on power . I think mine is on the hdmi board . cause this chip VOLUME AND INPUT SELECTOR
BD3473KS2 is chip that both digital sound and analog but there both on the hdmi board where the sound called the D-MAin assy in service manual and it affects the bottom MAIN BOARD WHERE the output goes to speakers. .I just dont have a oscilliscope at my disposal. Ive seen your problem with the no power problem posted and there is alot of diagnosis to fix your problem. TYPE YOUR PROBLEM then site:www.yoururl.com for specific web page searches .

[Packard93]

Re: Pioneer vsx-1021-k get picture no sound

I found a way to test the boards but Its not a cheap method I need a ocilliscope to locate the signal path on it . I need to find out where it stops . Cheapest ocilliscope used 75 . The cost of a board about. All i have at moment is a DVOM.

[madan1]

Re: Pioneer vsx-1021-k get picture no sound

See the attached images.


turn ON the amp
use CD input ( play some music on it )
select CD input from the menu ( use digital processing Dolby, THD, etc. / do not use direct or pure direct )

connector cn1801 -> test pins 1 and 3 for sound
then test pins 5 and 7 for sound

--------

use digital input ( internet, usb, etc. )
select the proper input, the processing does not matter

on connector cn1801 -> test pins 5 and 7 for sound


-------------------

check the voltages on the following pins on ak4588 / ic1801

pin 3 - 2.7~5.5V
pin 4 - 4.5~5.5V
pin 54 - 4.5-5.5V
pin 55 - 4.5~5.5V
pin 66 - 4.5-5.5V

you can test on the green dots from the attached image ( the positive ends of the capacitors )

----------------------------

how to test for sound - use headphones, connect "sleeve" to ground/chassy and with the top of the jack test the pins on the connector

[Packard93]

Re: Pioneer vsx-1021-k get picture no sound

What if if a voltage is lower than 4.5 / 5volts on ic 1801?What will that mean ??I tried the steps above on fm stereo but I cant hear sound but I hear something but its just like shhhh sound. When i place the postive tip to pins i hear buzz then when i contact the ground to the sleeve . I hear a shh but not music or voices. Not sure what Im trying to listen for?

[madan1]

Re: Pioneer vsx-1021-k get picture no sound

Could this "shhh" actually be FM static?
Also on which pins you heard it - green (rin lin ) or yellow ( fro flo )?

If the voltage is lower than the above values the IC might not work properly or at all. This IC is the main DAC ( and if I remember right ADC ).
RIN and LIN is the "upstream" analog audio which goes for digital processing. If you hear sound on that pins this means that the switching chip is working.
FRO and FLO is the processed audio signal which goes back to the switching/volume chip and after that - to the power amp.

If the voltages are within the above values do the test as I have described it - with both analog and digital sources which you can recognize easily.