The volume control on the receiver is not working anymore. If I turn the knob to lower the volume, the volume increases. The overall response to the knob turning is erratic. A friend told me the pulse gauge/detector (whatever the name is in English) for the volume knob had malfunctioned and that it is pretty common.

sounds like you need to take it in to have it looked at. no simple fix unless you are an appliance technician. hard to walk a beginner through. i suggest calling an stereo repair guy.

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Cleaning the contacts may help. The volume knob should pull off. Once its off use a non-flammable contact cleaning spray to clean the contacts behind the knob.

Electronics and automotive stores should have this.

Remove the cover and get some contact cleaner to spray into the volume control potentiometer assembly...this shoud fix it

the radio has to be replaced or sent out to get fixed. there is no easy fix to this problem.the knob is shot. (sometimes you can get the vol to move if you wiggle and push and play with the knob)You are better off replacing the radio with a nice aftermarket one.

I don't have a solution but if you take off the speaker grille on the front of the set and see two ribbonish cables, unplug the smaller one. The volume will not increase anymore but you cannot use the controls on the front of the tv and the power light will not show green anymore. You can however use the remote to do everything on the set that you would normally do. Hope this helps until I find a real solution.

Actually, -7 db and above woul be quite load.

Anyway, I am not very familar with the Pioneer GUI auto setup. But, am aware of how AVR are set-up.

If you have set up the home theatre by auto/manual setup then please check the channel levels whether any of your channels settings is at +7.0db.

If so, reduce this setting where it more +7.0, then you would be able to raise the overall main setting from the volume control to go higher than -7db.( by as much as you've lowered the particular channel setting)

Please do let me know if this helps.

It sounds like the volume control pod has gone bad and needs replaced (The knob shaft connects to the pod main body and the inside of the volume pod is what controls the rate of volume,If the inside becomes worn ,broken or dirty the volume will become erratic) Replace volume pod ! ..You may try cleaning by taking off the volume knob and getting a can of pressure air and blowing the dust out!
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When I turn on my radio, the volume is on and o.k. but when I try to turn it higher or lower the volume is lost completely. Any comments?

Well here goes a spelling problem for me. You need to replace a component called a podentiomiter. It is the actual volume control behind the knob. I have had to replace a few of these, and pioneer seems to to more prone to these problems.