10-29-2011, 09:28 AM
Without the 84 plugged in, you can check the AC voltage across each side of the secondary winding. First, measure at pin 2 of the 84 and the negative lead of part 61, the 12uF filter cap. Next, measure at pin 3 and the negative lead of part 61. The measurements should be similar, and I'm guessing around 300VAC.
If one or both sides are substantially less than 300VAC, your power transformer is toast.
If one or both sides are substantially less than 300VAC, your power transformer is toast.
-Greg
