So, my 5160 is dead... following this guide so far it seems pretty comprehensive. http://www.minuszerodegrees.net/5150_5160/MDC/minimum_diag_config.htm
Got as far as testing the 12V+/- and found a short (my PSU fan runs btw). I snipped off the 12V caps with my hackkos but no dice. So dug a bit...