Hi,

I receivd your email response>Thanks for responding. Last Thursday I took my keyboard back to the repair shop and they put 2 small boxes under the side edges of my keyboard. Sure enough they saw the problem! Tey explained to me because of the "play" in the middle of the keyboard (under, that is) there is a lot of pressure in that section when using an "X" stand. It tends to bend inward. Most likely causing a small exposed crack on the circuit board. I know you said they checked the circuit board, but I believe they didn't do a good job looking. My tech wiggled the power adapter plug and It didn't reset. When you're playing on the keyboard, if you consistantly play hard or hit the keys hard you're going to eventually split the motherboard. I took my stand to them last Friday. I think they're going to find thw crack and repair it. If they can't find it, I'll have to purchase another motherboard for about 800.00. I'll let you know if they do or don't. Meanwhile,if there's another authorized dealer nearby(or within traveling distance) I'd give them a shot.