I'm normally not in the business of reviving 8 year old threads, and despite the fact that there hasn't been a post for literally 2 years.. the thread IS mine.. and I did JUST come across the SAME issue again so F it! In the interest of potentially helping someone.. I SHALL REVIVE IT!!!!!
So after customizing a 2500 for a friend, I ran into this issue. The MPC came to me with a BIG screen and JJOS128 on it. I never used it with that setup. I got right to installing a new black normal sized LCD, reverting back to Akai 1.24, then JJOS free then JJOSXL. Then I started playing with it and noticed that mysterious crackling!! I was mortified to say the least. I contacted the owner who said he noticed it as well. So here Im anticipating having to go thru similar headaches I went through years ago(as recorded in this thread).
BUT.. Prior to doing all THAT ish.. I said to myself "maybe its the OS". I flashed it again installing the default akai OS, and like MAGIC it was GONE!! Ive installed I dont even know how many versions of JJOS at this point.. Free, OS1, OS2, OSXL.. all of them in various orders where possible, and NO MORE CRACKLES!!
SOOOOOO!! If you have this issue.. do a google search, and land on THIS page.. TRY some Operating System install swaps and see where that gets you! Fixed the issue for me this time around, 8 years after the first time. Jeeez. I wish I was this smart THEN!