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My Kurzweil Ensemble Grande Mark III no longer has sound. The unit turns on, the buttons change the LED display, but no sound comes out. For awhile prior to this (previous uses) there were a few pops and crackles when I turned the unit on. If I leave it on, every now and then it makes a sound inside like the speaker is going to pop (or something)... but no sound when I press the keys.

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Roland keyboard. Extremely static-y speakers. Cuts out.

It sounds like your volume slider is dirty. Try carefully and judiciously spraying a good quality contact cleaner into the slider and working it. do not use a lot. It only takes a little. Also do not use WD40.

Posted on Apr 23, 2009

  • 4 Answers

SOURCE: Repair a Mackie SRM 450 Speaker

You probably need to replace the diaphragm. The diaphragm is located behind the back cap. Simply remove the back cap, remove the diaphragm, clean the voice coil gap with a piece of masking tape, install a new replacement diaphragm, reinstall the back cap. That it!
You can see videos on how to replace diaphragm at this link.
http://www.soundspeakerrepair.com/speaker-parts-c/INST/Installation+Instructions
You can buy a new Mackie SRM450 diaphragm at this link.
http://www.soundspeakerrepair.com/speaker-parts-cp/SRM450-DIA/DIA-Mackie/Mackie/

Posted on Jul 21, 2009

  • 1137 Answers

SOURCE: Kurzweil Mark 10 keyboard stopped working

Try the reset procedure on page 5 ( last page ) of this pdf document:http://www.dgaudiorepair.com/PDF%20Files/HARD%20RESET%20for%20Current%20KURZWEIL%20.pdf Hope this helps. Note the first procedure says highest white key. I'd do the second procedure.

Posted on Aug 29, 2009

Hugh fulton
  • 62 Answers

SOURCE: Kurzweil piano keys are clicking seems to be worn out.

I don't see you doing any damage by having a look but I would get a piano tuner or repairer in to investigate the problem expertly - no slight on you. But if your Church congregation depend on it it's well worth the money.
Good Luck

Posted on Sep 13, 2009

  • 5603 Answers

SOURCE: My Yamaha YDP-121 digital piano has a key that is

Check if it might be dragging on the edge of the case. The restoring force for some of these comes from a silicone rubber dome that is oart of the contact. SOMETIMES the dome fails.

Posted on Nov 29, 2009

Testimonial: "sounds good but i am a novice with repairs and do not really understand all the terms used. also, i am not sure how to go about fixing or getting repl"

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