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John, Engineer and electronic enthusiast for more than 12 years.
Category: Consumer Electronics
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We have a vex-821-k. I think the cleaning lady pushed some

Customer Question

we have a vex-821-k. I think the cleaning lady pushed some buttons while cleaning and no we have no sound, I reset the unit and have checked all connections, still no sound...the display is flashing digital and the phase auto is displayed. the bluetooth and HDMI keep running across the display
Submitted: 1 year ago.
Category: Consumer Electronics
Customer: replied 1 year ago.
sorry its a VSX-821-k
Expert:  Jack replied 1 year ago.

Hello , my name is Jack
Perhaps I can help you with this problem but first i would have a few questions so could you please send me a reply when you are ready to proceed ?

Customer: replied 1 year ago.
Expert:  Jack replied 1 year ago.


Right now it sure looks like the unit is in demo mode and if that is the case then i can tell you how to turn that off but i`m not so sure it will give you the sound back .

Can you see the vsx setup menu on the tv screen ?

Customer: replied 1 year ago.
not on the tv
Customer: replied 1 year ago.
I'm working with the CD player
Expert:  Jack replied 1 year ago.

O.k then you may be able to do it using the vsx display

Make sure its remote is in receiver mode (RECEIVER BUTTON) then press SETUP , use the arrows to scroll down and item number 7 will be FL DEMO MODE , select that and set it to OFF

Customer: replied 1 year ago.
it won't scroll
Expert:  Jack replied 1 year ago.

You would need to connect this to a tv .

Expert:  Jack replied 1 year ago.

How did you reset the unit ?

Customer: replied 1 year ago.
i followed the reset process in the book
Expert:  Jack replied 1 year ago.

Can you play the vsx own tuner/fm radio ?

Customer: replied 1 year ago.
it won't play either
Expert:  Jack replied 1 year ago.

Sorry but I did not expect this to take that long and I do have to step out now.

You don`t have to do anything , your question will be reposted for other techs. to see and jump in.
Just stand by and someone should be with you shortly .
PS. Do not reply to this or it will be sent back to me instead of reposted.

Customer: replied 1 year ago.
Expert:  Russell H. replied 1 year ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

I need to ask first of all, does the Pioneer VSX821 DVR respond to controls at all, in anything like the usual manner?

And, when you reset it, did it seem to respond and did its display change as it should - or did that seem to have little effect?

If you did not do a power-off reset, try one:

- unplug the DVR.

- leave it unplugged for several hours.

- plug in to power again, only after that much time has passed.

- see if that improves its operating condition at all.

Let me know, please. Thanks.