Thanks skimask. By "add a jumper to those particular lines" do you mean adding something like a low-profile DIP switch (e.g. [http://www.digikey.ca/product-search/en ... s=679-3565](http://www.digikey.ca/product-search/en?keywords=679-3565)) so that the ICSP pins can be switched to GND (or left hanging) for in-circuit programming? Looking at the 12F683 data sheet, it says pins 6 & 7 are the ICSP pins, so just those 2 need to be jumpered?skimask:
Probably have to ‘hold’ the test clip on the PIC while programming is taking place…if only to make sure you’ve got a solid connection.And the resistor/LEDs may load down the PGC/PGD lines too much to let the programmer function properly as well.
Desolder the resistors and/or add a jumper to those particular lines… I don’t see why it won’t work.
Read the datasheets. Talks all about putting extra loads on PGC/PGD and the effects on ICSP.