I connect my Tyros 2 into our church's sound system using the main output jacks. This morning, during the sermon, there was a crackling coming over the sound system, which I later attributed to the jacks into the keyboard. I cleaned then off with a kleenex and the problem seemed to go away.

Is it the jacks, feedback from other parts of the sound system??????

Has anyone experienced anything like this? Any tips? The cables are only about 2 years old and stay in the church, with me connecting into them 2 or 3 times a week.

Graham