Took the back off, used some compressed air, and a fine brush to clean dust, made sure cable to top row of pedals was tight and in place. Made sure not tear or rips on cables inside....closed it up and works perfect.......out of warrenty so I know I was safe. Seems like I read a lot about this so before you pay someone to jiggle the cable on the inside save some cash. Just rememeber there at two screws on the back (where the inputs go) corners you have to take out to get the cover off once you have taken off all the screws on the bottom.....there are two sets of screws that are close together on the back, they hold in the sport post so you don't have to take them off. Just the ones around the edges....have fun!