I need some knowledgeable info and opinions on a problem I am having with a Korg X5D I sold on eBay. I certainly don't want the buyer to feel scammed, but I know I sent him a board in tip-top shape. Any ideas on the problem or a possible solution?

My buyer wrote,
...I USED THE X5D FOR ABOUT 45 MINUTES AND THE NOTES ON THE KEYBOARD WOULD ONLY SOUND INTERMITENT. NO REAL PATTERN. I HAVE TO TURN OFF AND TURN POWER BACK ON TO RESET IT FOR ANOTHER FEW MINUTES....

He says he loaded the preset b voices. And in conversation it sounds as if there is a polyphony issue, but with 64 voices even a heavy combi shouldn't fall out. Can anyone help? !!!

[This message has been edited by cassp (edited 05-11-2007).]