On my Korg X2 workstation, the LCD screen displays INIT I the combination A & B banks, and the program A & B banks. The same sounds is in all of these settings and I can't change it. How do I fix it?

up to you if you ant to spend the money to have it diagnosed and repaired

$213 or take to an electronics service technician to diagnose which part got damaged and replace the component/s.

https://reverb.com/au/item/69569832-korg-n364-n264-x2-x3-workstation-power-supply-board-assembly-part-klm-1633

https://www.google.com/search?q=Power+supply+board+of+Korg+X2

..

hello sir,
THIS IS SOFT RESET; FACTORY MUTE PARAMETERS WILL BE LOADED INTO ... ART, MULTIVERB LTX, No factory reset, remove battery for more than 5 hours. .... KORG, N364, HOLD ENTER AND 7, THEN POWER ON. KORG .... ROLAND, D-550, TUNE/FUNCTION AND MIDI DATA INIT: HOLD PATCH BANK 2,
thanks from: SHAAD GONDEKAR

It sounds like your ROM battery, which the ROM contains and stores the patches for the keyboard, has gone completely dead and your keyboard is dead in the water. However, if you can get a MIDI to USB converter and get the battery changed, then you can reload the patches back onto the keyboard.

I have worked on a Korg M1 Workstation and have had to replace the battery(CR2032) and then had to run a program called "MIDI-OX" which also gave me access to the patches needed in order to restore the keyboard to factory patch settings.

http://www.midiox.com/

Take a look at this AFTER you have gotten the battery replaced. I will tell you that replacing most batteries is a very intricate job as, the bottom of the keyboard has to be removed, as well as a lot of the internal boards. I had to draw a diagram and mark certain pieces so I would know where they went and in what order they have to be re-attached. My advice is take it to someone who works on electronics unless you want to DIY (not recommended) to get the battery replaced.

Hope this helps.

Hello, You may want to reset your machine, all data and pre loaded programs, for this you must turn on your M50 press the global mode button, click on the top arrow next to (basic) select option 2, load pre-preloaded demo data, you then choose all (PCG and demo songs). press OK. Your Korg will re install all factory samples, data and settings. Once completed It will then instruct you to turn off your machine. give it a minute or so to self upgrade before turning it back on, once you turn it back on you should see updating panel notifications right and left, you should be able to use all of the sounds and combi's available for M50. that's a factory reset. I hope this helps, Have a great day.

http://i.korg.com/uploads/Support/USA_KROSS_OpG_E(1).pdf

Check page 21

korg pa600 styles download Google Search

clean with dust off and a damp rag. might have stuff stuck in the keys

You can try this.
STEP 1:
Set Program protect and Combi Protect to OFF.
- GLOBAL
- Using PAGE+ or PAGE-,
find untill the display show "3A-MEMORY PROTECT".
Set the parameter to OFF by using YES or NO button.
STEP 2:
Data Load.
- GLOBAL.
- Using PAGE+ or PAGE-,
find untill the display show "05A-PRESET DATA".
Change ALL to PRG (your case).
Use Left/Right Arrow button to moving cursor.
Choose "PRE-a" (your case).
Move cursor to "OK?".
Press YES when "OK" blinking for confirm.
Exit (Go to PROG button).

Well looks like you have a capacitors problem. I had this problem too and a friend soldered two new capacitors in place. You can find information on the korg forum but most important is to know where the capacitors are located

http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=92395