RMX2450 Knobs

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   Hey all,

I wanna give my amps a squirt of switch cleaner, how do the volume knobs on the QSC come off? Do they just pull off? I tried giving them a bit of a tugged but they don't seem to move and neither I nor Lev wanted to force them.

Cheers,
Sam

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SamV Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 October 2008 Location: London Status: Offline Points: 8783	Post Options Post Reply Quote SamV Report Post Thanks(0) Quote Reply Topic: RMX2450 Knobs Posted: 11 March 2012 at 3:43pm
	Hey all, I wanna give my amps a squirt of switch cleaner, how do the volume knobs on the QSC come off? Do they just pull off? I tried giving them a bit of a tugged but they don't seem to move and neither I nor Lev wanted to force them. Cheers, Sam

taurusty Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 09 January 2007 Location: Jamaica Status: Offline Points: 504	Post Options Post Reply Quote taurusty Report Post Thanks(0) Quote Reply Posted: 11 March 2012 at 4:13pm
	They pull off, if I recollect correctly. Better you pull down the amp & remove the module in it"s entirety & clean properly. Think switch cleaner mite damage the tracks

duck1 Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 22 February 2008 Status: Offline Points: 172	Post Options Post Reply Quote duck1 Report Post Thanks(0) Quote Reply Posted: 11 March 2012 at 4:14pm
	I cleaned the pots on pair of these a couple of years back. IIRC, the knobs just slide off. I ended up taking the whole pot apart to clean it though...

kedwardsleisure Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 5157	Post Options Post Reply Quote kedwardsleisure Report Post Thanks(0) Quote Reply Posted: 11 March 2012 at 9:09pm
	Yes, pull off knobs. .
	Kevin North Staffordshire

ceharden Members Profile Send Private Message Find Members Posts Add to Buddy List The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11851	Post Options Post Reply Quote ceharden Report Post Thanks(0) Quote Reply Posted: 11 March 2012 at 9:32pm
	The only way to successfully clean the pots on those amps is to remove them from the board, bend the little tabs that hold them together, dismantle and then clean with a cotton bud soaked in switch cleaner. At which point it is probably easier just to fit a new set. Unfortunately just squirting some switch cleaner into them doesn't really help with the root cause of the problem. I recently dismantled some to try and find out why they failed so quickly on these amps. The answer appears to be that it's not the carbon track that gets dirty but the conductive track which joins the wiper back to the centre contact oxidising up. Looks like silver plating that's getting tarnished.

kedwardsleisure Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 5157	Post Options Post Reply Quote kedwardsleisure Report Post Thanks(0) Quote Reply Posted: 11 March 2012 at 9:39pm
	Made by Taiwan Alpha. Cheap pots in an otherwise good amp. I fit a superior type when they go.
	Kevin North Staffordshire

SamV Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 21 October 2008 Location: London Status: Offline Points: 8783	Post Options Post Reply Quote SamV Report Post Thanks(0) Quote Reply Posted: 12 March 2012 at 1:58am
	Which one do you recommend?