Carver PM-100 level controls stuck

customsuburb · 29th June 2005, 06:03 PM

I just picked up a Carver PM-100 pro audio amp. Everything works great except the level controls on front wont move at all. They are stuck almost all the way up.

Someone reccomended buying some spray like this. http://www.partsexpress.com/pe/showd...number=341-200 Or should I Just take it to a local repair shop and see if they can fix it?

Thanks

jaycee · 29th June 2005, 06:14 PM

If you know what you're doing it would be simplest to unsolder the potentiometers, and find some replacements. If not, then yes, let a repair shop do it.

anatech · 29th June 2005, 08:39 PM

Hi customsuburb,
That spray is good for cleaning contacts but will not help here. Did the unit get wet or is there a possibility the knobs were pushed in too far?
These may need replacement, not a real hard job.

-Chris

customsuburb · 29th June 2005, 09:51 PM

Quote:

Originally posted by anatech
Hi customsuburb,
That spray is good for cleaning contacts but will not help here. Did the unit get wet or is there a possibility the knobs were pushed in too far?
These may need replacement, not a real hard job.

-Chris

I won the amp off of ebay so I dont know if anything happened to it.

The guy that sold it said that he didnt even notice they were stuck because he left them in the same position all the time.

I'll probobly just take it into a local place and have them look at it.

amplifierguru · 30th June 2005, 01:14 AM

Being a pro-amp, the pots are not some locking type? To prevent unwanted tampering/resetting.

Just a thought.

Greg

anatech · 30th June 2005, 01:33 AM

Hi Greg,
No they are not the locking type. Basically, just inexpensive carbon pot. The grease may be very sticky or the knobs are pushed against the bushing.

Customsuburb,
Try to free the pots first. Pull the knobs towards you. They are push on plastic types. No set screw. That alone may free them. You may need a wide flat screwdriver. Put a business card underneath so you don't gouge the faceplate.

-Chris

29th June 2005, 06:03 PM	#1
customsuburb diyAudio Member Join Date: Dec 2004 Location: United States	Carver PM-100 level controls stuck I just picked up a Carver PM-100 pro audio amp. Everything works great except the level controls on front wont move at all. They are stuck almost all the way up. Someone reccomended buying some spray like this. http://www.partsexpress.com/pe/showd...number=341-200 Or should I Just take it to a local repair shop and see if they can fix it? Thanks

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29th June 2005, 06:14 PM	#2
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	If you know what you're doing it would be simplest to unsolder the potentiometers, and find some replacements. If not, then yes, let a repair shop do it.

29th June 2005, 08:39 PM	#3
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi customsuburb, That spray is good for cleaning contacts but will not help here. Did the unit get wet or is there a possibility the knobs were pushed in too far? These may need replacement, not a real hard job. -Chris

30th June 2005, 01:14 AM	#5
amplifierguru Account Disabled Join Date: Aug 2004 Location: Earth	Being a pro-amp, the pots are not some locking type? To prevent unwanted tampering/resetting. Just a thought. Greg

30th June 2005, 01:33 AM	#6
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Greg, No they are not the locking type. Basically, just inexpensive carbon pot. The grease may be very sticky or the knobs are pushed against the bushing. Customsuburb, Try to free the pots first. Pull the knobs towards you. They are push on plastic types. No set screw. That alone may free them. You may need a wide flat screwdriver. Put a business card underneath so you don't gouge the faceplate. -Chris

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