Dwayne Reid wrote: > I also (years ago) purchased something called a "Leak Seeker" that is > specifically designed for this kind of trouble-shooting. It is > essentially a high-resolution DC voltmeter that controls the pitch of > a tone. Its really cool in that it auto-zeros itself as you progress > along the trace(s) heading in the direction of the short. > > You don't need to watch a meter - just listen to the tone as you move > the needle-point probe from place to place along the trace. The > fine-tip needle easily penetrates the solder mask. > > Its actually worked really, really well the several times that I've > used it. Do note that its designed to locate DC faults (as opposed to > pulses). Are these devices available nowadays? Anybody got a model number? Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist