ML CLS Panel Repair

[Gliding Dutchman]

The set of faulty CLS speakers are arriving late this evening.

Apparently the one panel is faulty causing the unit to switch off.

They are already dismanteled and the wooden frames are refinished in new laquer.

Any pointers?

Wish me luck - I have never worked on ML speakers only QUAD 57's.

GD

 

[roberto]

The set of faulty CLS speakers are arriving late this evening.

Apparently the one panel is faulty causing the unit to switch off.

They are already dismanteled and the wooden frames are refinished in new laquer.

Any pointers?


Hola...you have to track from where the problem is, could be a faulty power supply or a short in the voltage multiplier... you can address your question at Martin logan. The will help you with your problem, happy listening,
Roberto.

 

[C.A.P]

If it plays and its not down but just fades out its the power transformers in the x over

 

[Gliding Dutchman]

CAP & Roberto...

After arriving back home from an excellent weekend away I fired the babies up.

The one panel plays 100% but the other is about 10dB softer in volume and sound is a bit distorted. I have switched the electronics around but the fault seems to lie with the ELS panel...

Also have sent JP at ML a message.

Thank you

GD

 

[nsgarch]

The one panel plays 100% but the other is about 10dB softer in volume and sound is a bit distorted. I have switched the electronics around but the fault seems to lie with the ELS panel...Also have sent JP at ML a message. Thank you GD

Somewhere in these forums, I remember reading that these symptoms can occur when there is poor contact of the diaphragm (or was it the stator?) at the edges of the panel due to oxidation/corrosion. Let us know what Jim says.

 

[Gliding Dutchman]

Then CLS speakers propped up in the garage... they are huge... weehooo...!

GD

 

[Gliding Dutchman]

My feelin as well. I think there is a bit of corosion on the positive terminal of the diaphram... waiting for Jim's response...

GD

 

[C.A.P]

Clean all the contact wire ares, Un screw the leads and clean and wash them panels or vacuume them good !

 

[Gliding Dutchman]

Any ideas on how to wash these panels?

 

[eknuds01]

Any ideas on how to wash these panels?

http://www.martinloganowners.com/~tdacquis/forum/showthread.php?t=3115&highlight=washing

See Tom's post. It contains a .pdf on the washing idea.

Erik

 

[Gliding Dutchman]

Thanx Eric...

 

[C.A.P]

from the looks of you other thred the scalpel has been brought out . Good Luck !