01-20-2017, 08:58 PM
The filament windings of the amplifier tubes should not be floating with respect to ground.
In the case of the yellow wires winding supplying the 6SN7 tubes, there should be a winding center tap connected to ground, so there should be continuity to the chassis and no DC voltage present.
As to the black wired filament winding for the 6L6's, there is no center tap so one side should be grounded.
The 5V rectifier winding should be floating as it has B+ voltage on it.
In the case of the yellow wires winding supplying the 6SN7 tubes, there should be a winding center tap connected to ground, so there should be continuity to the chassis and no DC voltage present.
As to the black wired filament winding for the 6L6's, there is no center tap so one side should be grounded.
The 5V rectifier winding should be floating as it has B+ voltage on it.
