Hi
This is my first post on this site.
I've had an 840A V2 for about 4 years now. It is a very impressive amp.
It has been displaying volume issues for the past 6 months or so.
The volume has increased without input from me. When using the volume control on the amp it would be very random even increasing the volume when trying to turn it down. This was more noticeable when rotating the volume knob rapidly after the volume had increased by itself. Using the remote the volume operated as it should.
I've read the previous posts with interest and do not discount their validity. Though I have achieved a satisfactory result to this issue in a very simple way with the use of Deoxit 5 spray.
I removed the front panel and separated the circuit board from the front panel to gain access to the volume control mechanism.
Discovering the volume mechanism was a sealed unit I placed a tissue to catch overspray then sprayed Deoxit on the rotating spindle of the volume control.
Then rotated the spindle back and forth numerous times. I repeated this process 4 or 5 times.
The result was a much smoother rotation of the volume control.
After putting the amp back together I now no longer have any random volume issues. The volume control moves freely and corresponds correctly to up and down movements.
In hindsight as the mechanism is sealed it is not nessasary to dismantle the amp front panel. Just remove the volume control knob and spray directly onto the spindle where it enters the mechanism.
This makes it a very simple procedure and well worth trying first.
This is my first post on this site.
I've had an 840A V2 for about 4 years now. It is a very impressive amp.
It has been displaying volume issues for the past 6 months or so.
The volume has increased without input from me. When using the volume control on the amp it would be very random even increasing the volume when trying to turn it down. This was more noticeable when rotating the volume knob rapidly after the volume had increased by itself. Using the remote the volume operated as it should.
I've read the previous posts with interest and do not discount their validity. Though I have achieved a satisfactory result to this issue in a very simple way with the use of Deoxit 5 spray.
I removed the front panel and separated the circuit board from the front panel to gain access to the volume control mechanism.
Discovering the volume mechanism was a sealed unit I placed a tissue to catch overspray then sprayed Deoxit on the rotating spindle of the volume control.
Then rotated the spindle back and forth numerous times. I repeated this process 4 or 5 times.
The result was a much smoother rotation of the volume control.
After putting the amp back together I now no longer have any random volume issues. The volume control moves freely and corresponds correctly to up and down movements.
In hindsight as the mechanism is sealed it is not nessasary to dismantle the amp front panel. Just remove the volume control knob and spray directly onto the spindle where it enters the mechanism.
This makes it a very simple procedure and well worth trying first.