Fender Style Output Transformer wiring

Fender Style Output Transformer spec's.
PART#	MOUNTING	HEIGHT	LENGTH	WIDTH	WATTS	PRIMARY	SEC	LBS.
022921	1 3/4" Approx	1 3/4"	1 3/8"	1 3/8"	3.5	14,500	4	6.5 OZ
022905	2 3/8"	1 5/8"	1 7/8"	1 7/8"	8	7000	4	12 OZ
022913	2 13/16"	2"	2 5/16"	2"	12	8500	8	15 OZ
041318	3 1/8"	2 1/4"	2 3/4"	2 1/4"	25	8500	8	1.5 LB
022848	3 9/16"	2 5/8"	3 1/8"	2 5/8"	50	4000	4	2.3 LB
018343	2  X 3 7/16"	3 1/2"	3 3/4"	3"	50	4000	2,4,8	4.5 LB
022855	2 1/4 X 3 1/4"	3 1/4"	3 3/4"	3 3/8"	50	4000	2	4.4 LB
022899	2 1/4 X 3 1/2"	3 1/4"	3 3/4"	3 1/4"	100	2000	4	5.3 LB

-

Fender Style Chokes
PART#	MOUNTING	HEIGHT	LENGTH	WIDTH	LBS.
125C3A	2"	1 3/8"	1 11/16"	1 3/8"	6 OZ
125C1A	2 13/16"	2"	2 5/16"	1 3/4"	15 OZ

-

Fender Style Power Transformer spec's.
PART#	Pri	MOUNTING in.	HEIGHT in.	LENGTH in.	WIDTH in.	WATTS	HT-  VAC	HT - ma	6.3v	5v	LBS.
Mojo 779	Multi	3 1/8"	2 1/4"	2 3/4"	2 1/8"	?		?	6.3 / ?	none	1.8 LB
125P1B	120v	2 1/2 X 2"	3 1/4"	3"	2 1/2"	6-18	640vac	70ma	6.3V / 2A	5V/2A	3.5 LB
041316	120v	2 13/16 X 2 1/4"	3 7/8"	3 3/8"	2 3/4"	25		120ma	6.3V / 3A	3A	5.2 LB
022798	120v	3 7/16 X 2 3/4"	3 3/4"	4 1/8"	3 7/16"	40+	700vac	140ma	6.3V / 4A	5V3A	7.7 LB
022756	120v	3 3/4 X 3"	3 7/8"	4 1/2"	3 3/4"	100	690vac	310ma	6.3V / 6A	none	8.5 LB

Note: If your power transformer has a center tap for the green heater wires and you replace it with a non center tapped power transformer, you will have to add two 1/2 watt 100 ohm resistors to the heater circuit to make an artificial center tap.
This page will explain how to do that.
http://www.el34world.com/fenderservice4.htm

Fender Style Power Transformer wiring
See info below
	-	-
See info below	See info below	See info below

Note: To determine if you have Version A or Version B TBPT, use a multi meter set to continuity.
You will get a beep from the Orange wire to the Brown or Black wires on Version A.
You will get a beep from the Orange wire to the Brown/White or Black/White wires on Version B.

TBPT Version A primary hookup Line = The AC connection. Blk=Black, Brn=Brown, Wht=White
120 vac	Line -	Twist together Brown and Brown/White
.	Line -	Twist together Black and Black/White
.	.	Do not use Orange. Heat shrink the tip.
-
240 vac	Line -	Brown
.	Line -	Black/White
.	.	Twist together Black and Brown/White
.	.	Do not use Orange. Heat shrink the tip
-
220 vac	Line -	Orange
.	Line -	Black/White
.	.	Twist together Black and Brown/White
.	.	Do not use Brown. Heat shrink the tip
-
100 vac	Line -	Orange
.	Line -	Black
.	.	Do not use Brown. Heat shrink the tip
.	.	Do not use Brown/White. Heat shrink the tip
.	.	Do not use Black/White. Heat shrink the tip

Note: The last batch of TBPT's that I received from Victoria amps has the orange wire moved to the other primary. I think the transformer guy just got the two primaries mixed up but it will not matter since both primaries are equal. I made a new diagram above and instructions below for wiring this Version B model as I am calling it. Nothing is different except that the orange wire has been moved.

TBPT Version B primary hookup Line = The AC connection. Blk=Black, Brn=Brown, Wht=White
120 vac	Line -	Twist together Brown and Brown/White
.	Line -	Twist together Black and Black/White
.	.	Do not use Orange. Heat shrink the tip.
-
240 vac	Line -	Brown/White
.	Line -	Black
.	.	Twist together Black/White and Brown
.	.	Do not use Orange. Heat shrink the tip
-
220 vac	Line -	Orange
.	Line -	Black
.	.	Twist together Black/White and Brown
.	.	Do not use Brown/White. Heat shrink the tip
-
100 vac	Line -	Orange
.	Line -	Black/White
.	.	Do not use Brown. Heat shrink the tip
.	.	Do not use Brown/White. Heat shrink the tip
.	.	Do not use Black/White. Heat shrink the tip

TDPT-LDEX primary hookup Line =The AC Wall connection. Blk=Black, Brn=Brown, Wht=White
120 vac	Line -	Twist together Brown and Brown/White
.	Line -	Twist together Black and Black/White
.	.	Do not use Orange. Heat shrink the tip.
-
240 vac	Line -	Brown
.	Line -	Black/White
.	.	Twist together Black and Brown/White
.	.	Do not use Orange. Heat shrink the tip
-
220 vac	Line -	Orange
.	Line -	Black/White
.	.	Twist together Black and Brown/White
.	.	Do not use Brown. Heat shrink the tip
-
100 vac	Line -	Orange
.	Line -	Black
.	.	Do not use Brown. Heat shrink the tip
.	.	Do not use Brown/White. Heat shrink the tip
.	.	Do not use Black/White. Heat shrink the tip

Mojo 779 primary hookup Line = The AC Wall connection. Blk=Black, Wht=White, Yel=Yellow
120 vac	Line -	Twist together Black and Black/Yellow
.	Line -	Twist together Black/White and Black/Red
.	.	Do not use White. Heat shrink the tip.
-
240 vac	Line -	Black
.	Line -	Black/Red
.	.	Twist together Black/White and Black/yellow
.	.	Do not use White. Heat shrink the tip
-
220 vac	Line -	White
.	Line -	Black/Red
.	.	Twist together Black/White and Black/yellow
.	.	Do not use Black. Heat shrink the tip
-
100 vac	Line -	White
.	Line -	Black/White
.	.	Do not use Black. Heat shrink the tip
.	.	Do not use Black/Yellow. Heat shrink the tip
.	.	Do not use Black/Red. Heat shrink the tip

Mojo 779 Version 3 primary hookup Line = The AC Wall connection. Blk=Black, Wht=White, Yel=Yellow
120 vac	Line -	Twist together Black/Yellow and Black
.	Line -	Twist together Black/Red and Black/White
.	.	Do not use White. Heat shrink the tip.
-
240 vac	Line -	Black/Yellow
.	Line -	Black/White
.	.	Twist together Black/Red and Black
.	.	Do not use White. Heat shrink the tip
-
220 vac	Line -	White
.	Line -	Black/Yellow
.	.	Twist together Black/Red and Black
.	.	Do not use Black/White, Heat shrink the tip
-
100 vac	Line -	White
.	Line -	Black
.	.	Do not use Black/Yellow. Heat shrink the tip
.	.	Do not use Black/Red. Heat shrink the tip
.	.	Do not use Black/White. Heat shrink the tip

---

Home - Ordering Information - Returning parts - Hoffman Board manufacturers
Links - Shipping Info/policy - E-mail Me - Amplifier Service Technicians - About HoffmanAmps

---

The Tube amp Library of information
Click the link above for Tube amp info, Schematics, Board building information, Projects, Mods, Transformer diagrams, Photo's, Sound clips.
There are hundreds of pages of Tube amp information on my library page.

---

Please visit my Tube Amplifier Forum
Here's the place you can go to ask tube amplifier questions.
You will find a large community of friendly amp builders at the link above.