Akai MPK25 Troubleshooting

My mpk 25 Is Showing a Really darkened Dim screen and Says 1000000000

on The Bottom and The Press Enter Button Is Lit Too

My MPK is getting some kind of data that affects the velocity and the pitch bend, when I hit press the key normally it does not reproduce this, however when I press hard, the note fluctuates at least a whole step above the intended note.

I found an akai mpk25 totally disassembled, hasn't gotten any type of connection cables & I don't even know if all the parts are here (excluding cables of course). I tried to do a mockup just to see if all components are present and other than the cables i think all the obvious components are there; knobs, screen, drum pads (4x4 grid i think) keyboard, 2 benders, volume, power, USB & 2 circuit boards I believe. Can anyone tell help me figure this thing out, PLEASE? I've tried everywhere including the also website. I had this 5yrs now and ran out of ideas where to turn. If this doesn't work I'm making a youtube video totally destroying it. Starting light chunking parts out of spring-loaded pipe gun to pulverizing to finally burning it w a few different simultaneous blow torches until it is completely& entirely in liquid state. I really don't want to. I would like to see it play but at this point in the game it actually has birthdays w me & it's time for one thing or another. Somethings got to give!!!

My MPK61 screen works but just a for a time, after some hours the white letters fades to dissapear and left only the blue screen in blank. Anyone with this problem?