Hi to all, I use pic18f4550 and I noticed that the pic looses it's program memory I am not sure how many % but it is enough to see things are not working and this is my 3rd time I started doing hardware trouble shooting and I ended up reprogramming pic fixed the problem. The only possibility is the part got over heated while soldering. any idea? thanks Andre -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist