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Old 06-21-2014, 12:53 PM
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earlyfilm earlyfilm is offline
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Location: Culpeper, VA
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Quote:
Originally Posted by Kamakiri View Post
. . . . . on the schematic on the inside of the set, the 12AT7 in the tuner was crossed out in pencil, and 6C4 written on the diagram.
One of my sets has a tuner with 12AT7, 6AG5 & 6BH6, while the other has 6C5, 6AG5 & 6BH6 crossed-out in pencil and 6AG5 written in. I marked my pictures to indicate which chassis they are from.

It's Sam's that is incorrect. The photo in Sam's is missing one connecting wire and a few other parts.

This chassis was available for over 2 years under at least 4 brands and probably more, so production changes are expected.

Your former recapper must have lengthened the wires, because the factory wires are too short to get a full view of the underside.

Quote:
Originally Posted by Kamakiri View Post
Your set is missing a black wire connecting the B+ limiting resistor 7.5 Ω or 10 Ω resistor and the 100 µFd electrolytic.

Also below are photos illustrating the chassis with the 6C5 and 12AT7 tuners.

If you or anyone wants a higher resolution copy of these, just shoot me an email, as VK compresses photos. If you need see a better view of the underside of the three tube sub-chassis, I'll do it, but it may take a week or so, as I have to clear my workbench first to unsolder and mark the seven leads.

Sorry for the rant, but I've gotta find a source for traditional lamps. These pigtails make color codes hard to read and give you a completely different color when taking two photographs shot seconds apart, without touching the lights.

James
Attached Images
File Type: jpg TV400-6C5-Sub-Ch.jpg (108.7 KB, 26 views)
File Type: jpg TV400-12AT7-Sub-Ch.jpg (100.7 KB, 25 views)
File Type: jpg TV400-6C5-Full-Power.jpg (70.1 KB, 29 views)
File Type: jpg TV400-12AT7-Full-Power.jpg (86.6 KB, 27 views)

Last edited by earlyfilm; 06-21-2014 at 01:14 PM. Reason: picture mixup
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