Pin 0 is from a bad cross-reference pic.
What your doing is connecting pin 12 to 3 in the right guide

Pin 12 is +12 VDC and Pin 3 is Open/Close!
There is no Pin 0 look under your board and the numbers are all there except 1,2,3,5,7, and 9.
should be 11 9 7 5 3 1
G G G G O/C NC
12 10 8 6 4 2
+12 +12 +5 +3.3 TS NC
This confusion had bricked a lot of drives.
Done correctly pin 4 = Tray/Status shorted briefly to any of these 5,7,9 or 11 all the same ground should work. I would still use a resistor as a precaution.

So if the pin 0 is no longer working (actually pin 12) you probally fried the +12vdc.

hope all this info is correct and helps.
peace
zil