Hey everyone, I recently got a second revision of our PCB back from our PCB house. I through everything on the board and tried to fire it up and as Murphy's law would have it did nothing. :P I traced it quickly to the power supply part of the circuit, which was outputting .9V when it should have been 3.6V. I took another PCB and soldered on only the power supply components. No luck, although sometimes it gets really hot and outputs 6.6V?? :P I thought ok an obvious blunder in making up the PCB, rechecked the board many times looks ok and DRC checks out.... Took the meter to it all connections seem to go where they are suppose to.... The only thing that has changed from this revision to the last are widening the VCC and gnd, Using Tantalum instead of electrolytic and using PCB mount battery clips instead of a separate battery holder. I'm using Linear's LTC3400 and their standard standard circuit for the power supply, it's worked in many projects before, but I'm at a total loss on this one. Anyone have any ideas I realize it's vague, but I don't think it's just being temperamental, boost converters don't seem to be that picky about layout. Anyways, if anyone could offer a hand it would be more then GREATLY appreciated. Thanks in Advance, Aaron -- 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