dyno
Well-known member
Working on a pcb that is not working, I have randy fromm's big blue book and in it he says you can use a 6volt battery and some wires to track down a bad IC by grounding the one wire and connecting the positive lead to a node of one of the IC's and if there is a bad IC it will get hot. Not sure if anyone else has tried this but I am having no luck unless I am doing it wrong(which is a possibility). When the board is powered up there are a few IC's that are getting hot, does that mean they are no good? On a handful of ICs the power reading on the legs are in the mid 1vdc to just over 2vdc which means something aint right. Any ideas to isolate the problem?
