You read 12V at the fuse? Which side of the fuse? Measure for voltage across it: - on one side, + on the other, and you should see awful close to zero volts. If you see anything other than zero volts, the fuse is blown.
Did you check for voltage at the 3.3V output? Measure for 3.3V across C286, for 12V across C165, and for 1.05V across C288.
These are the readings I took:
C165 = -2.2mV
(Orange).......... should be 12V
C286 = 1.3mV
(Yellow).......... should be 3.3V
C288 = 0
(Ligth Blue).......... should be 1.05V
F1 = -12.12v
(Pink).......... should be 0V
Power Pins Input Conector = 12.13v
(Pink) it's OK
F1 = fuse right? So it's blown.
I must replace it first.
How much Amps can it handle?
10A@12V?
After replacing the F1 fuse; readings (C165, C286, C288) should back to normal?
Or something else could be blown or broken?
Very thankful for your time/help.
http://img593.imageshack.us/img593/5272/g7u6.jpg