Some useful data:
(All Tweed Super Iron)
PT: Classictone 40-18094
Choke: Hammond 159R 6H 200mA DC
OT: Heyboer APD-8088-H (with 2.6, 4 and 8 ohm secondaries)
Preamp tubes: EH 12AY7, 12AX7
Power Tubes: 6L6 EH
Rectifier Tube: 5U4GBEH
Mods from stock Fender SCH/Layout:
1) Switchable 100pF-250pF Bright cap on bright channel
2) 3-way Switchable LNFB on V2 grid between stock 4.7M, "no connection" and a Bourns 5M trimmer resistor
3) Switchable .02 uF--.001uF OD cap into the PI for handling 10 inch vs. 12-inch speakers
4) 470K PI grid stopper resistor added
5) .01 uF bypassable GNFB cap
6) 470R 1W resistor on PT screens
7) 1.5K 1W grid stopper resistors on PT grids
![Cool 8)](./images/smilies/icon_cool.gif)
9) Adjustable Bias pot
10) Manning bias mod
11) OT secondary output selector.
12) 500mA fuses on HT, 6.3V CTs
13) Shaffner AC module with internal fuses
14) Standby switch and 0.05 uF ground reference cap delete.
Schematic of this current build: Chassis shots:
![Image](https://1.bp.blogspot.com/-chfZ86bq0sU/YHzTzvsGpgI/AAAAAAAAClM/Agd131N_OboxGq9tVPCQHyq8Apy_g0dHgCNcBGAsYHQ/s2048/427B2BEE-F70D-4B6C-8234-B7DA7F956A7C.jpeg)
![Image](https://1.bp.blogspot.com/-oY0K0UaFPyQ/YHzT4xCqmII/AAAAAAAAClg/OMYSBtGaqPQlG-yfYAvdJll_89hOyKzzgCNcBGAsYHQ/s2048/E339FA12-2E33-484E-8C69-504026E05D86.jpeg)
![Image](https://1.bp.blogspot.com/-zqpr46jYEpY/YHzrIIDkkZI/AAAAAAAACl4/Ktydoe84xP0Nw73PheBs0Oj_TcH2341iQCNcBGAsYHQ/s2048/7597576C-E2F3-4A45-ACF1-CA875052C5D6.jpeg)
![Image](https://1.bp.blogspot.com/-2ifD3_Z0j9E/YHzTzkoOKZI/AAAAAAAAClI/UOBbEl_yCWYgH2HYLmhzpnJsLWMbmhdawCNcBGAsYHQ/s2048/5C1A1517-32E2-4AEC-8270-AE4E5114B4EC.jpeg)
![Image](https://1.bp.blogspot.com/-Ni4OmPs9ZZ0/YHzT25J-HoI/AAAAAAAAClU/7y2pLAgIoAsQPX5DKjstcHVEdy--Ja23gCNcBGAsYHQ/s2048/8B7DF215-9410-46E4-BEC2-00B533F52EED.jpeg)
![Image](https://1.bp.blogspot.com/-2H70ckq7S1E/YHzT3SgpMJI/AAAAAAAAClY/d45ca4NmSgA-N2-6G-rRYNAHViQBXhfCgCNcBGAsYHQ/s2048/9D8A2D60-9F34-4E48-8C77-5B7E442407FC.jpeg)
![Image](https://1.bp.blogspot.com/-flfMY2P7Tk0/YHzTzf3bBeI/AAAAAAAAClE/eioykWE1OjsBs3fyas6Z8yALG9uGPfgOQCNcBGAsYHQ/s2048/55526864-1FA4-47A4-A9F5-A6F8EF6998DE.jpeg)
![Image](https://1.bp.blogspot.com/-v7e12CPAQ6Q/YHzT1QK_jPI/AAAAAAAAClQ/wSatts6LrMceu7rXQ7RNzTKOXSVp-BDhQCNcBGAsYHQ/s2048/73DDA5EE-CDC8-4C1C-A0BB-72CC42DF8122.jpeg)
![Image](https://1.bp.blogspot.com/-IcK2Otykouk/YHzT4NUpG6I/AAAAAAAAClc/di-EjwF15KcTC7sSi6NpWmgKbgGwrY-vwCNcBGAsYHQ/s2048/AE13DDD9-0F19-4E32-B419-E9470184C72A.jpeg)
My limiter bulb is comatose when the chassis is powered on without tubes, more-but-mildly lit with the rectifier tube in, about the same with preamp tubes, then gets quite bright with the 6L6 tubes in, and there is no guitar sound. I get mild buzz through a speaker cabinet when probing the PI plate wires.
The OT center tap is connected to V4 pin 6 which is jumped to V5 pin 6 and the second 16 uF power supply cap as per the Fender 5F4 schematic. Incidentally, that schematic draws the tube heaters connected to preamp pins 4-5 and the pins 9 to ground; I connected my heaters conventionally with the pins 4-5/9 and 2/7 approach.
The tube heater string test intact with 6 VAC across each socket.
The Bias pot is connected to the blue wire coming from the 220K grid leak resistors and the white wire from the 10K 2W resistor in the bias circuit.
The red-green wire is the PT bias tap lead off the PT secondary. With the limiter in place (40W bulb) it measures 34 VAC.
The input jacks all appear to function normally.
Any recommendations would be much appreciated. I posted this in a new thread to avoid further hijacking the 5F4 thread posted by another user. Cheers.
EDITS:
1) The turret connected to the 8 uF cap and V3A plate has been re-soldered.
2) Input pic added.
3) OT primary DMM-tests intact with 51R on one side and 57R on the other side when disconnected.