[X4U] Daughter's Hard Drive Carnage Part 2

[Doug McNutt]

At 21:35 -0400 10/21/08, David R. Boag, DDS wrote:
  Pin 1 = 5VDC, Pin 2 = 12VDC, Pins 3 & 4 are both  ground. Output is 
supposedly 5V with 4.2A and 12V with 3A. I have  tested the pins with 
my voltmeter and the volts look right, however, I  can't seem to get 
any amps when I go from pin 1 or 2 to the ground  pins. 0 A.


Huh???  You connected a current meter directly from the +5 or +12 
lines to ground?

It would make some sense to do that with a 2, or so, ohm series 
resistor but most current meters will look like a short circuit on 
the supply until their internal fuses blow.

Check out your current meter with a dry cell and a series resistor. 
I'll bet its fuse is open.

Did you check the voltage while connected to a running disk?
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