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I have a Pioneer VXS-D409 receiver. A couple of years ago the volume control on the unit itself stopped working. However, I was able to change the volume with the remote. Recently, I noticed that the volume will increase by itself while any type of media file is playing.
Can anyone offer an explanation? Thank you kindly.
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Great, I love it when a plan comes together!!
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The contact(s) probably needs to be cleaned.
Oops. Looks like I spoke too soon. The unexpected automatic increase in volume still seems to be an issue. However, since it was suggested that the volume control on the remote might be "locked" (& thus sending an intermittent signal to the receiver), I took the batteries out of the remote to see if that might resolve the issue. I will report back.
Nevertheless, thanks again for your help.
Oops. Looks like I spoke too soon. The unexpected automatic increase in volume still seems to be an issue. However, since it was suggested that the volume control on the remote might be "locked" (& thus sending an intermittent signal to the receiver), I took the batteries out of the remote to see if that might resolve the issue. I will report back.
Nevertheless, thanks again for your help.
If you are using an after market remote (logitech, crestron...etc.) this could be a problem as well?
Thanks to all of you for your suggestions. It appears that I have exorcised the demons from from my volume control. After removing the enclosure & the volume control circuit board, I cleaned the dust with compressed air. Then I used spray contact cleaner to clean the contacts & the rotary mechanism. As a result, the volume control knob on the receiver seems to work fine. As far as the issue with unexpected automatic changes in volume, I will have to run the receiver for an hour or so tonight. I am cautiously optimistic. Again, many thanks!
Yes, I agree. I'll try to get to it today or tomorrow. Thanks.
that is strange because I have a Pioneer receiver with the same symptoms. First, make sure the remote is not pointed at the receiver when not in use because the adjustment button on it may be stuck. If the problem continues I would order a new part from Pioneer and then everything should be working right again...
It seems doubtful that the remote would be the culprit. The automatic increase in volume seems to occur after about 10 minutes of listening to a CD. Then, all of a sudden, the volume will increase by about 50%. I can reduce the volume with the remote. But it will automatically increase again. Poltergeist?
You most likely need to clean the rotary encoder behind the volume knob on the receiver.
Thank you for the response. If indeed that is the issue, it should be an easy fix. I will certainly pop the enclosure & have a look. Thanks again!
I agree that is where the problem lies but it may not be easy to get to the place that needs attention withing the control. Is the knob still snug and operating like when it was new or is it loose and sloppy compared to new?
Just getting to the control may be a pain in the ass and require a whole sub board to be removed to access it. Then the control itself may need to be removed from the board to be disassembled. Hopefully it won't be so tough but after opening many similar products its 50/50. Good luck and let us know.
Oh, since it works from the remote maybe you need only do something to disable or stop the control itself from randomly changing.
ET
Yeah, last time I cleaned a rotary encoder on a receiver, it took me about 90 minutes of time to disassemble and reassemble the receiver, and maybe 5 minutes to bend up the metal tabs that held the encoder together, spray it out, then squish it back together.
The volume control knob works as new. I will try to remove the enclosure today if possible. Hopefully, access to the area to be cleaned won't be a PITA. With some pressurized air & electrical contact cleaner I might get lucky. Thank you for your thoughts.
OK. I hope it turns out to be easy or at least not a total pain in the rear!
ET
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