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How do I repair 4 stuck keys on a Behringer Concert Keyboard CDP2000?

Unit was torn down. Section of metal bar which appears to secure 12 keys was removed. I was unable to remove keys to see what is wrong.

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Counter weights are not rotating on the one octave pin that holds them in place. This is caused by the grease changing over the years. Two options: remove the pin and ream out the nylon hole with a drill bit. Not too big of a hole, because you don't want the weight clunking around while playing. Caution: they will all start drooping, so do them all. Better option: since this keybed was copied from Suzuki, look into having the entire rod set replaced with a Suzuki ACE rod kit. The new rod is Teflon coated and won't give you any problems after it has been replaced.

Posted on Feb 24, 2016

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Posted on Jan 02, 2017

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I have Behringer xenyx 1622fx , It will turn on the power but a few minute the power will turn -off , Please help me to solve the problem of this unit in power supply section or other section.


Here is your schematic:

http://elektrotanya.com/behringer_xenyx_1622fx.pdf/download.html

Scroll down and find link "Get manual" and click to download.. IGNORE other download links they are for third party viewers. Power supply is on page 11. This is a switching power supply running from line voltage. For personal safety USE AN ISOLATION transformer when working on it. First thing is to measure all the voltage outputs before and during shutdown. Switching power supplies often require use of an oscilloscope to repair. The three terminal regulators that follow the main switching supply each have thermal shutdown so if one of them is being overloaded it will shutdown and that voltage will drop way down. Use great caution when working on the supply!!!

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Soil appears to workeaker cno sound output from speaker or headphone output


• Open the unit, and check regulators in the power supply section.

• Could also be from the op amp IC , and coupling capacitors.

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Behringer Europower PMP2000 Fuse keeps blowing when the amp is switched on.


For goodness sakes do NOT replace the fuse... doing so causes more damage inside. Likely one of the power amps has shorted and may have damaged the power supply as well. Also please read my tip on Fixya regarding a HAZARD with channel A if you use 1/4 inch plugs with the speaker cables. Essentially the sleeve of the channel A plug is the hot, and not the tip. Ground the sleeve of the plug and you can blow the channel A amp. YOU WILL NEED TO TAKE THE UNIT IN FOR REPAIR... THIS IS NOT A DIY REPAIR!!!!

Aug 23, 2011 | Behringer Rx 1202fx 12 Channel Line and...

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Ok i was playnig on my celviano ap-620 and then 8 of the keys started to sound rare, very loud, it seems like it lost the key touch sensivility on those keys from the center (C) and 8 keys down i tried...


What has happened is that one signal wire of the matrix that scans the keyboard has opened up. Each key has two contacts. One closes before the other and that is how they measure key velocity to control the loudness for piano sounds for example. When one contact doesn't work, often the sound is set to MAXIMUM key velocity resulting in MAX loudness. The key contacts are scanned digitally in groups of usually 8 or 12 and, for instance, every C key has a single line attached and then every group of 8 or 12 has a second line and then there are two complete sets of these to implement the velocity sensing. Your unit probably has either a break in a cable or possibly a cable connector that has failed or not seated OR worst case, the circuit board under the keys has a crack breaking one wire or circuit trace going to that section of the keys. The problem will require opening the keyboard to repair. If you are not electronically adept, besst to take this to a repair shop.

Aug 14, 2011 | Casio AP-620 AP620 Digital Cabinet Piano...

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My new Yamaha DGX-230 keyboard is defective - no "A" keys work on the entire keyboard. The display doesn't even show I'm pressing the keys either. Is there anything I can try? There is no...


One of the key scanning matrix wires is defective someplace between the key contaact and the receiving circuit. Since this is brand new, the costs should be handled under warranty since you say the keyboard is new. I have downloaded the service manual:

http://elektrotanya.com/yamaha_dgx-230_ypg-235.pdf/download.html

Scroll down to "Get Manual" and click on it to download. On page 61 is the keyboard contact diagram. I woudl appear that if a matrix line is bad, the the D# notes should ALSO be bad.
Since this is new, I would not attempt to repair it. Call the distributor regarding the return oor repair... they MAY have an authorized repair facility. If the D# notes are OK, then the problem is deep in the unit... This is ALL based on the symptoms you have given..

Apr 30, 2011 | Music

2 Answers

Does anybody have a schematic for the Behringer LPA1300 power amp section used in the K3000FX keyboard combo? Are the output devices supposed to be the ground path for the power amp. (there are no...


Look at this one:

http://elektrotanya.com/behringer_k1800fx_sch.pdf/download.html

This is for the 1800 however...

Often they will just double up with two amps, one inverted, and use in bridged mode.at the higher power in what we call an "H" arrangement.

Since the drains are tied together, the heatsinks MIGHT be hot output level.

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I have Behringer PMP 3000 2 channels not working fx not working and fan not working but unit turns on ok


Fan speed depends on temp sensors. If doesn't run at all when unit is loaded, take in for repair immediately.

If FX window changes with the control, chances are you have not set the controls properly. You need to havew THREE places turned up for effects: The FX knob in the desired channel(s), The FX slider and finally the knob to send the FX to the mains and/or monitors.

OFTEN the stereo channels aopear to not be working because of the A/B switch between the RCA and 1/4 inch jacks.

You did not give me enough info regarding which channels appear to not work.

Sep 26, 2010 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

I have a CDP-100 and need disassembly instructions for access to internal keyboard assembly. Unit was dropped while unloading from car. Now some keys are akimbo and won't play as though they are off their...


I just fixed my CDP 100 which had a similar problem - dropped and two keys not working up one end.
1. Lay keyboard upside down on soft surface. Under keyboard is plastic cover held on by 17 screws. Remove all these and lift cover away. The metal key ends are all revealed.
2. Locate the disloged keys. Carefully press them back into position - they will "click" into place. Make sure the corresponding key on the keyboard isn't stuck in an "up" position - you may have to remove the metal key part and replace it again while making sure the key is correctly seated.
3. Replace cover and screws.

Feb 22, 2010 | Casio Music

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