Crackling/Distortion noise when I turn up volume.


My Rogue 66 Magnum preamp seems to be the problem here but I'm not 100% sure.
When I'm playing music and I walk over to my system to turn up the volume, a crackling/distortion noise occurs, especially in the left channel.
The system is warmed up and I do not use a remote.
Along those same lines, when I play music very low after the family goes to bed, the right channel plays fine but the left channel is almost non exsistent until I creep up the volume, then both channels seem to play at the same level but it's louder than I'd prefer.
Final note-I have taken both my preamp and amp to my local audio repair shop that I've used for years and they cleaned the volume control pod on the Rogue and ran test on both units and found nothing wrong.
Any feedback please?
Your time is greatly appreciated!
Thanks!
greh
Forgot something...You say that your dealer found nothing wrong but bear in mind that all potentiometers have an imbalance tolerance and that is maybe why he did not mention anything. I am not aware of any highly commercial pot that does not have an imbalance. Due to their construction, attenuators on the other hand have extremely small imbalances (0.05db maybe) and that is why I recommended you go this way. As for me, in the passive I built, I bought a Sfernice potentiometer that costs in the UK $50 (twice the price of the ALPS blue pot) and I am satisfied with it. There is of course still a very small imbalance but it is far way better than before...
You most likely have a dirty volume control IE. pot. It has a build up of carbon on the contacts. Best to clean it with a cleaner/lubicate type of spray like Caig deoxit DN5 or LPS
#2. Both can be had at WWW.MCMinone.com or call them @18005434330.
Thanks to everyone who responded.
Much appreciated!
Knl, I'll try cleaning the control pot again and if that dosen't work I'll be touching base with you.
Thanks again!