1974 Marshall PT color Confirmation?
Posted: Sat Apr 04, 2020 12:49 pm
In the process of going through and restoring my 1974 Marshall I’ve noticed the secondary B+ wiring color code is odd.
I’ve got:
B+:
Blue (hot)
Yellow (center)
Red (hot)
Bias:
White (hot)
Green (gnd)
Heaters:
Black (hot)
Solid Green (gnd/center)
Black (hot)
The heaters have 0.05 ohms between the center tap and hot.
Nothing I have found shows blue as a B+ hot wire. Is this a stock Dagnall PT?
I’ve got:
B+:
Blue (hot)
Yellow (center)
Red (hot)
Bias:
White (hot)
Green (gnd)
Heaters:
Black (hot)
Solid Green (gnd/center)
Black (hot)
The heaters have 0.05 ohms between the center tap and hot.
Nothing I have found shows blue as a B+ hot wire. Is this a stock Dagnall PT?