I have this Zenith and no model number but the cabinet looks like a 908. The primary winding on my audio output transformer is open as no plate voltage and the primary measures open. I have another audio output transformer that uses the same output tube (6F6) but the one in the Zenith has 4 wires going to the secondary of the output transformer. Two thick wires and two smaller size wires. There are 3 secondary terminals, 2 wires on one end, one in the middle, and one on the end terminal. Why the 4 wires as my used transformer has only two output wires? How do I hook up my used transformer?

:I have this Zenith and no model number but the cabinet looks like a 908. The primary winding on my audio output transformer is open as no plate voltage and the primary measures open. I have another audio output transformer that uses the same output tube (6F6) but the one in the Zenith has 4 wires going to the secondary of the output transformer. Two thick wires and two smaller size wires. There are 3 secondary terminals, 2 wires on one end, one in the middle, and one on the end terminal. Why the 4 wires as my used transformer has only two output wires? How do I hook up my used transformer?

The transformer may have windings for different speaker impedances, or it could have a tertiary winding for feedback purposes. I need a schematic to be sure.
Lewis

::I have this Zenith and no model number but the cabinet looks like a 908. The primary winding on my audio output transformer is open as no plate voltage and the primary measures open. I have another audio output transformer that uses the same output tube (6F6) but the one in the Zenith has 4 wires going to the secondary of the output transformer. Two thick wires and two smaller size wires. There are 3 secondary terminals, 2 wires on one end, one in the middle, and one on the end terminal. Why the 4 wires as my used transformer has only two output wires? How do I hook up my used transformer?
:
:The transformer may have windings for different speaker impedances, or it could have a tertiary winding for feedback purposes. I need a schematic to be sure.
:Lewis
:
The cabinet is the same as a 908 model but the chassis does not match a 908 per NA. The 908 uses a 42 audio output but this chassis uses a 6F6 and other tubes are different too. The chassis looks like it belongs in this cabinet inspite of the different tube layout. The tube layout of this chassis is 6A8, 6K7, 6B6, 6F6, and 5Y3 and is a Zenith chassis.
John
:

:::I have this Zenith and no model number but the cabinet looks like a 908. The primary winding on my audio output transformer is open as no plate voltage and the primary measures open. I have another audio output transformer that uses the same output tube (6F6) but the one in the Zenith has 4 wires going to the secondary of the output transformer. Two thick wires and two smaller size wires. There are 3 secondary terminals, 2 wires on one end, one in the middle, and one on the end terminal. Why the 4 wires as my used transformer has only two output wires? How do I hook up my used transformer?
::
::The transformer may have windings for different speaker impedances, or it could have a tertiary winding for feedback purposes. I need a schematic to be sure.
::Lewis
::
:The cabinet is the same as a 908 model but the chassis does not match a 908 per NA. The 908 uses a 42 audio output but this chassis uses a 6F6 and other tubes are different too. The chassis looks like it belongs in this cabinet inspite of the different tube layout. The tube layout of this chassis is 6A8, 6K7, 6B6, 6F6, and 5Y3 and is a Zenith chassis.
:John
I found that my chassis is the same as a 5S29 or 5S56.
John
::
:
: