SOME OF THE KEYS ARE NOT GIVING ME SOUND - Roland Juno-D

Hi Kyle:
Have a look at your manual.
Sometimes you'll find that there will be an "input" setting required.
You might also try google with his link.
https://www.google.ca/#q=Williams+Allegro+88-Key+Digital+Piano
Hope this helps.
Cheers.

On organ mode, in general, almost all brands of the modern keyboard, velocity setting is not enabled. Setting velocity is used to determine how much the level of the sound that follows how strongly you press the keys. It is really just to imitate the sound of vintage organs, which in the past, electronic organ technologi not use the velocity on the keys. So, how strong / slow we press the keys, the sound level will remain the same.
At the Piano mode,modern keyboard using setting velocity. This also to imitate an acoustic piano, which, if we press the keys slowly, the sound level will be slow as well, and vice versa.
So, in your case,at the same volume slider, try to play on the organ modes, note level. Moving to the piano mode and press the keys securely powered (full power). Then the sound level should be equal to the organ mode.
On modern keyboards, also included organ sound that added velocity setting. Usually found on the user bank.

On organ mode, in general, almost all brands of the modern keyboard, velocity setting is not enabled. Setting velocity is used to determine how much the level of the sound that follows how strongly you press the keys. It is really just to imitate the sound of vintage organs, which in the past, electronic organ technologi not use the velocity on the keys. So, how strong / slow we press the keys, the sound level will remain the same.
At the Piano mode,modern keyboard using setting velocity. This also to imitate an acoustic piano, which, if we press the keys slowly, the sound level will be slow as well, and vice versa.
So, in your case,at the same volume slider, try to play on the organ modes, note level. Moving to the piano mode and press the keys securely powered (full power). Then the sound level should be equal to the organ mode.
On modern keyboards, also included organ sound that added velocity setting. Usually found on the user bank.

It's about hardwares.
Wiring connection sockets is loose.
Inside the korg PA50,Wiring connection to the keyboard is separate to left and right.
Open/disassemble your korg.
Look for connection cable to the left keyboard.
One end is on the keyboard,the other end is at the mainboard.
Unplug both of it, then mounted again.
For master volume,better buy new one.

There's a watch type battery (flat disc) on one of the boards inside the X5D. This maintains the settings while the keyboard is switched off and could be the whole problem.
The keys are on two different circuit boards connected with a multi-pin cable. If the cable were dislodged I would expect it to simply cut off half the keys but it's probably worth checking.

When cleaning buttons HOPEFULLY you did NOT use DeOxit or other contact cleaners like Blue Shower as these can damage the buttons that are conductive rubber.

The conductive rubber buttons should ONLY be cleaned with 99% isoprophyl alcohol and Q Tips. Both the conductive "pill" and the traces they contact on the circuit board should be gently cleaned with the Q Tip wetted with the alcohol.

If you used anything but the 99% isoprophyl alcohol, you can TRY cleaning properly and hopefully they will not have permanent damage.

We can only guess at what model/brand you have.

OFTEN such low volume things can be traced to a burned out light used in some expression pedals that use light dependent resistors to vary the volume.

Be aware that on some organs things like rhythm drums MAY go through a different set of speakers and amps than the other voices.

The organ is basically a harmonica gated by keys. It has reeds and a fan.

I would open it up and clean everything. It is possible a mouse has gotten in there and they stink including their messes for quite a while.

You might need to lube the fan.

Not familiiar with the PSR 6700, HOWEVER on the Yamaha Tyros the keys stay with the baseplate part. Once the top cover is removed, there are screws holding the segments of keys. The keys on the Tyros are in segments. As I recall the black keys are in two individual sections.

There may be commonality between the synths.

The keys press on a sheet of silicon rubber domes that have conductive "pills" under them. The restoring force is actually from the dome itself. Two contacts per key! BE CAREFUL to align the silicon sheet when re-assembling.

That doesn't sound good. It sounds as if the processor is locking up and that might only be fixed by replacing the main board. Sometimes this happens if a unit gets fried by static electricity.

But before giving up, I would open up the unit and check for loose cables and connectors internally. If there are chips (IC's) that are socketed on circuit boards, push them down firmly. Things may start working again.