> It works as I said with a new chip, I am wondering why I get the errors with > the old chip. as it does not seem possible that this chip could produce > these errors. Mostly that the capacitance are under-value. What the values now? and are the two Max232 having the same suffixes? Cheers, Ling SM -- 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