If you open the PSU you will find a square shape "block" looking Capacitor with the side blown out, this is
where the magic smoke genie's hide
0.1uf A/C filter capacitor & 0.47uf A/C capacitor
They don't have polarity , near the plug end, cost $5
I have a row of them on a shelve of blown ones, they look like exploded fire crackers
Its fairly normal for an Apple // to explode when you plug it in, best practice would be to replace
these two capacitors before powering it up for the first time. Its not a case of *if* but *when*
