Dick,

Did you ever solve your 16F819 Turn-On problem?

Like Bruce recommended, I have found the PWRT seems to help.
I am also using INTRC and initialize to OSCcon = $60 (4mhz) and
later switch to OSCcon = $70 (8mhz) at the end of my initialization,
just before my main loop.
I have used 16F627A with INTRC, and 16F876, 16F872 w/ crystal and never had power up Turn-On problem like the 16F819.

Mark