> > -----Original Message-----
> > From: pic microcontroller discussion list
> > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Kieren Johnstone

> > * Turned on +12V, +5V (actually more like 3.6V - 3xAA
> > rechargable), but programming datasheet says this is fine)

> > * Ooie, transistor is hot.. I'll try turning it round *shrug*..
> > nope, now it all reads as --Blank-- and still fails to program..
> > turned it back, reads 3FFF then 00s again.
> > * Doesn't work if I connect +12V connectly to MCLR either (with
> > 100ohm resistor)


What resistor do you have between 12v and the collector
of the transistor? Did you use only 100 ohms as stated
above? Try 10k instead. 100 ohms would cause about 120mA
which would dissipate maybe 0.12 watt, plenty to get that
transistor toasty.
-Roman

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body