Good points Mac. About 90 percent of the failures I've seen have usually been the result of turning the keyboard up to near maximum volume, which really overloads the power pack. However, I have one sitting on my desk right now that belongs to a friend and the AC line is broken right where it enters the strain relief fitting. He, like many others, always wrapped that wire tightly around the power pack before putting it away. Fortunately, I was able to make the repair for him in less than 30 minutes.

I have found power packs that have a better wattage rating for as little as $14 U.S. that are made in Hong Kong. They don't overheat when playing with higher volumes.

Gary