TRISA is nice for safety sake, what i'm talking about is the Analog features (comparator and/or adcs) that might be already enable at POR.

You want to send a digital signal, but it's not going to work pretty well if the I/O is set to analog at POR.

http://ww1.microchip.com/downloads/e...Doc/39626d.pdf

PDF page 226, ADCON1
ADCON1=$0F ' disable all ADCs

PDF page 235&236, CMCON
CMCON = %00000111 ' disable comparator.. yeah even if already disable at POR

PDF page 241 CVRCON
CVRCON = 0

HTH