I am looking for some help with this problem. My PSR-S910 makes a lot of static pops and cracks when turning up the volume. I usually just turn it back and forth quickly a dozen times or so and it goes away. Would spraying some kind of cleaner on it help, or should I have my retailer repair it. (I am not very knowledgeable about things like this). My PSR-S900 did the same thing, and I sold it as is and purchased the S910. Hoping for a cheap fix, if there is one. (maybe this is a good excuse to move up to the S950 without going through a divorce) Thanks, Gary