Quote Originally Posted by Darrel Taylor View Post
Curious ...

Do you know if the program that was already loaded in it was using the Internal Oscillator with MCLR disabled?

I've had some difficult times trying to reprogram 675's and F88's after that scenario.
But I was able to get them back by turning on power to the chip at just the right time in the programming sequence. Took 10-15 or more tries each, but did get them all back.
<br>
The only chips i have had problems with has been 12f675 16f88 and 18f1320
what happens on the 16f88 and 18f1320 is you set the configure for ex-osc
and have none