Korg license code

https://www.korg.com/tmp/support/download/index.php/manual/0/90/1945/?country=us&page=manual&prodtype=0&prodid=90&fileid=1945

https://korg-pa-paradise.blogspot.com/2018/04/blog-post.html

https://www.manualslib.com/manual/1060488/Korg-Pa60.html

Your best answer would come from Korg. Itself. Here's the link-
http://www.korg.com/us/support/contact

If you have electronic expeerience, take it to a repair shop. You can cause more damage okiong around if you don't know what you're doing.
Past that, contact Korg customer service for the schematic and parts list. The part should be available from Korg directly of from Mouser
http://www.korg.com/us/support/contact
Korg Parts Parts Is Parts Guitar Parts Amplifier Parts Korg Keyboard Parts
Mouser Electronics Electronic Components Distributor
Korg Full Compass

hi to everyone . how to fix authorization code for Korg Legacy polysix?

Here's some links.https://www.google.com/search?q=korg+keyboard&aq=f&oq=korg+keyboard&sugexp=chrome,mod=0&sourceid=chrome&ie=UTF-8#hl=en&tbo=d&sclient=psy-ab&q=replacement+keys+korg+keyboard&oq=korg+keyboard+keys+replace+ment&gs_l=serp.1.0.0i8i13i30.43550.56800.0.59049.18.18.0.0.0.0.165.1688.14j4.18.0.les%3Bcesh..0.0...1.1.geeNjdPgveM&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&fp=142cd5af7754d791&bpcl=35466521&biw=1066&bih=532

From the original site of korg (http://www.korg.com/Support) there is nowhere the model u r describing.Please make sure u have posted the correct model description.

The pa800 has a fixed amount of Ram at 64mbs and it is not physically possible to upgrade the Ram. The pa2x has a removable128mbs Module and that can be upgraded via a 256mb Module from Korg.
Keith [mrniceneasy - KorgForums]

Hi Mate, I have the exact same problem, casued by wrong adaptor being connected by accident, did you manage to find what the code is on the IC5 chip ?, I can see NSV, but there is another letter or number before it but cant make it out as that where its burnt.

The DR-55 is a Boss DR. Rhythm. I don't know of a Korg 55 drum machine. Are you sure?