hello Arrati,

yes I have 200 ohms resistors connected in serial with each input of the PIC to limit the current into the pic.

I guest some thing wrong, because when I use OHM meter to test the LEDs. at the two pins on the socket (removing the PIC out of the socket) every thing is ok! so the circuit is not open.

I try to figure out

thanks for your comment.

Minh le