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hissing noise when turning volume knob?

hi audiogon fellows, recently i have detected noise(like radio tuning) from my right speaker, only when i turn the volume knob. Firstly I'm pretty stupid with machinary stuff, i'm guessing it might be one of fuses is about to get blown out.
I have no idea what causes the problem, strange though the noise stopped for awhile, and then back this week, and there is no problem at all during listening.
I just hope it doesn't die on me anytime soon.
BTW my amp is Plinius 8200mk2 intergrated.
Thanks in advance!!
andy
karmatogdral
7 responses Add your response
ack's avatar
ack
115 posts
 
One likelihood is that your volume pot is going bad, but the problem can also be electronic. Have it checked out; I doubt it will just go away.
kurt_tank
1,189 posts
 
Ack is correct, although it is also possible that it is merely dirty, and needs to be cleaned.
(Have them check to see if it needs to be cleaned first, as this might save you some money.)

The old Counterpoint preamps were notorious for having this problem.

Good Luck!
rayooo
70 posts
 
In some cases, if you rapidly move the control up and down many many times, the problem will minimize at least temporarily. This action "cleans" the internals of the Pot a bit.

Obviously be careful, either turn the system off when doing it, or, make sure the volume does not exceed reasonable levels.

If the problem minimizes, the Pot is dirty..in most cases the hash will return soon.
honest1
586 posts
 
I was going to say what Rayoo said.
karmatogdral OP
66 posts
 
thanks for advice, i'll give that a try.
summitav
163 posts
 
When he says "many times" it make take 30-100 times.

What you are doing is wiping/wearing away oxidation that has formed on the contacts of the volume control.

I used to have that on my maintenance list along with turning all the push buttons off and on 30-100 times.

Contact points need to have the oxidation cleaned off and many times you cannot get inside to do it.

This helps.

If that is your problem you will see/hear and immediate improvement and you will need to do the same thing regularly.
karmatogdral OP
66 posts
 
wow it worked, i did the knob turning repeatedly and the noise went. I guess as long as it doesn't affect sound quality or damage anything, i could live with the turning regularly.
cheers!
andy
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