No sound is coming from the target device
Not properly connected
The USB cable may not be connected to the computer. Check if the USB cable is properly connected to your computer. If it is unrecognized, try restarting your computer, and reconnecting the device.
In the case of a external hardware module, check if the MIDI cable is connected from the MPK25 to the devices MIDI IN port.
Connected after software application has started
You may have connected the MPK25 after the software application began causing the device to be unrecognized. You will have to restart the software application with the controller plugged in.
The device may not be sending information on the same channel as the application. Check if this device is sending MIDI information on the channel the other device expects.
Notes don't sustain properly
Notes sustain continuously
Notes sustain if the sustain pedal is not properly connected. If you plugged in the sustain pedal after the device was powered on, the notes will sustain. Turn the MPK25 off, then turn it on again to fix the problem.
Notes are stuck
The device may be sending incomplete MIDI data. In order to fix this, turn off the device and then turn it back on.
Notes sustain in reverse
If you plugged in the sustain pedal after the device was powered on, notes may sustain in reverse. In order to fix this problem, turn the MPK25 off, then turn it on again.
Volume knob/Pitch bender problems
Volume knob/Pitch bender doesn't work
If either the volume knob or the pitch bender aren't working then the ribbon cable connecting them to the motherboard may be damaged or disconnected. In order to get to the ribbon cable follow the Akai MPK25 Volume Knob / Pitch Bender Replacement guide. If the ribbon cable is not damaged then the knobs may be faulty. Try replacing them with new ones.
Working in reverse
If the volume knob is working in reverse, then there may be a problem with the controller minimum value. Set the controller minimum value to be lower than the maximum.
Beat pad problems
Beat pad sensitivity
This device is known for having problems with the sensitivity of the beat pads. In order to change the sensitivity, follow the Akai MPK25 Beat Pad Replacement guide.
Beat pads don't work
If the beat pads aren't working then the ribbon cable connecting it to the motherboard may be ripped or damaged. Another possibility is that the ribbon cable may not be connected correctly to the mother board. In order to get to the beat pad follow the Akai MPK25 Beat Pad Replacement guide. If the ribbon cable is connected correctly and the beat pads still don't work then they might be faulty. Try replacing the beat pads.
Plays at maximum velocity
If the device is playing at maximum velocity, then the full level feature is turned on. Turn off the full level feature to return to normal velocity. This button is located above the octave button.
LCD screen does not work
Display won't light up
If the display wont light up, the ribbon cable connecting the screen to the mother board may be ripped or damaged. See the Akai MPK25 LCD Replacement guide for instructions on how to get to the ribbon cable. If the ribbon cable is not damaged and connected correctly then the screen may be faulty. Try replacing the whole screen.
Display screen is cracked
If the display screen is cracked then follow the Akai MPK25 LCD Replacement guide in order to replace it.
Lines running through the screen
Lines running through the screen is usually caused by a damaged connector device. The ribbon cable connecting the screen to the mother board may be damaged or may have come loose. See the Akai MPK25 LCD Replacement guide for instructions on how to get to the ribbon cable.
Piano key problems
Keys can become damaged in a variety of ways, such as dropping the device or accidentally hitting it against something. If any of the piano keys are broken then follow the Akai MPK25 Keys Replacement guide in order to replace them.
A key may be stuck for multiple reasons. In order to assess why the key is stuck, follow the Akai MPK25 Keys Replacement guide in order to get a better look at the stuck key.