Hi ??? Do this change your configuration to RC and reprogram the pic And use RC if you got the clock going then you have startup Problem, crystals, caps etc. After any kind of soldering wash The board first. Are you using water soluble solder? Andre Abelian -----Original Message----- Two of my PIC stopped function, today. I lost them. All can be programmed and verified OK, one can even write to EEPROM. But, did not osci and dead fish. how to check if a PIC is broken? seems PIC is weaker than normal mosfet........ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics