Wouter, I just checked I have 2 open inputs. How can open input change program memory? thanks Andre -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf Of wouter van ooijen Sent: Friday, November 16, 2007 10:54 AM To: 'Microcontroller discussion list - Public.' Subject: RE: [PIC] PIC looses it's program memory > 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? Got the same problem, with 18F2550's (a pickit2 clone circuit). My current guess is that I have open inputs. I will add a few more resistors to the next batch, but that is due only 2008Q2. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist