> Arrgh! > My dyslexia overcomes me... > It is a 16C716. *That* made a difference !! :-) :-) Ok then, so you are using hardware PWM, right ? It's at least using RB3 if used. Write the smallest possible code that shows this problem and post that. I guess you have already done that in your own debugging sessions, right? Jan-Erik. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.