On our side of the pond there is/was a device called the "Polar Toneohm". It used a hall effect device to translate the current flowing in a track to a tone - rising pitch, higher current. These could be very effective in finding shorts in power rails etc, also in multi-layer boards. Google "Toneohm" and you will see.
Geoff -- ################################################# Geoff Blake, G8GNZ JO01fq: Chelmsford, Essex, UK <ge...@palaemon.co.uk> or <melecert...@gmail.com> Using Linux: Ubuntu 11.04 on Intel or Debian on UltraSparc and even on the NAS. Avoiding Micro$oft like the plague. ################################################# _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.