Christopher4187

You have a reset resistor on the chip for sure, what value? Also, with the RF, you do have the chip decoupled well?

I designed a PIC circuit many years ago, and it worked great. It moved a servo to hide a plate on the back of a show motorcycle. And sometimes it would go nuts when the owner rode it. Turned out, he stored his Nextel celephone in the compartment the circuit was in, and the RF was resetting the PIC, and dropping the plate back down (init setting). I added some caps, and all fixed.

Just a thought as you are wondering if HW/SW. Maybe drop a scope on the reset, and on the POWER pin and watch it..