Martin Logan SL3 repair

As a former SL3 owner until last July I would  say if these are the original panels they are probably past done their useful service.  I had mine from 1998 ( repanel 2010)  to present.   They still sound great but decided to get 11A's when ML had the sale last July.  
Repaneling is costly.  I  am awaiting CLS panels($ 2995)  which took 5 months. I have the same issue , washed them, no difference. Just a dead panel  that is 20 yrs old. 
Suggest looking at the new ML's  as the new panels have improved, better bass integration,etc.   Good luck

If stator is the problem, Martin Logan will build you brand new stator with updated spec. But it will cost ya. 

"...So is washing panels an ML sanctioned thing?..."

Probably not but what do you have to loose? Many have done this successfully.  


MartinLogan | Help Articles : Features and General Questions for Electrostatic Speakers

Martin Logan Quest Stator Panel Shower Washing (martinloganowners.com)

And thanks Russ for the input!

Forgot to mention no smoking env. 
So is washing panels an ML sanctioned thing?  Has this been known to fix a channel imbalance?

The reason I ask is that the panel may just need cleaning. There is an instructional video on that somewhere. Might do the trick.  

Channel imbalance.  One speaker plays around -10db.

What's wrong with them? Do they play at all? Maybe just need to be cleaned? Do you smoke?