I am yet another PIC newbie.

To get to the point, I have assembled a 16f877a project as per an example I found on the net - http://members.home.nl/b.vandam/lonely/pagina000.html - on a breadboard. While the project does not work as expected I did stumble over this effect: When I ground pin 13 or 14 momentarily with or without the crytal and capacitors in place, the led connected to pin 33 powers on for sometimes a second, sometimes two.

Do any thoughts occur from this clue?

Thanks
KLF