On Wed, Dec 1, 2021 at 9:57 PM James55 <james_55@...> wrote:
Did try with a PSU on that rail but couldn't feel any heat, although the
voltage did immediately drop to zero.
If you have a high-resolution DMM, you can play a game of warmer/colder by
measuring the voltage across components or traces. If you pump 1A in,
you'll have a voltage delta of 1V per Ohm. The traces carrying the current
to the shorted component will make like resistors, and the voltage will be
lowest next to the short. With a 6 1/2 digit DMM, especially if you zero on
the input voltage you can get really, really close to the short pretty
quickly.
