1951 AMC 16" TV Restoration

[Crist Rigott]

I then removed the picture tube for safe keeping. Then removed both the HV rectifier and low voltage rectifier tubes. I put it on my variac and brought the voltage up to 40vac while checking the current draw. Less than 1/4 amp - good. After awhile I added more voltage to check to see if the tubes would glow. I got up to 70 volts and all the tubes that were plugged in glowed. Enough of that.

I then decided to pull the tubes to check them. I used the SAMS tube location chart nad began pulling tubes, verifying that the correct tubes were installed, then marked them with a small piece of masking tape. When I got to V7 the Detector tube, there were 2 tubes in its place! Whoa, I didn't see that coming. Both Sams and Riders showed a single 6T8 tube. I have a 6AQ6 and a 6AL5 tube. I'm pretty sure this is a factory mod or update. Now I need to find the correct schematic and documentation, if its out there. I included a picture of the 2 tubes on top and below the chassis.

Also there was a 6V6GT instead of a 6K6GT for the vertical output.

I also have a question on "something" that is sticking out of the "back" of the HV cage that is attached to the Flyback transformer. At first I thought it was a fuse. But it looks like the 1/4A fuse in mounted below. Though I'd have to check for sure. What is that something? I've included a picture of it.

The chassis is pretty clean but real dusty. I'll spend some time cleaning it up before I go much further.

I also will research the dual tube modification.

[Crist Rigott]

Here's the schematic from Sams.

[WISCOJIM]

Originally Posted by Crist Rigott

Here's the schematic from Sams.

Chris - did you seam those pages together, or do you have a scanner that will do 3 pages at once? What model scanner did you use?

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[Crist Rigott]

Originally Posted by WISCOJIM

Chris - did you seam those pages together, or do you have a scanner that will do 3 pages at once? What model scanner did you use?

.

I seamed them together using my CAD program. DeltaCad.

I used my cheap Lexmark X1185 printer/scanner. I only use it to scan though.

[WISCOJIM]

Originally Posted by Crist Rigott

I'm pretty sure this is a factory mod or update.

Gotta be factory, the hole was punched when the chassis was just a piece of sheet metal.

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[WISCOJIM]

Originally Posted by Crist Rigott

I also have a question on "something" that is sticking out of the "back" of the HV cage that is attached to the Flyback transformer. At first I thought it was a fuse. But it looks like the 1/4A fuse in mounted below. Though I'd have to check for sure. What is that something? I've included a picture of it.

What you are seeing is the flyback core and retaining clamp.



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[Crist Rigott]

Originally Posted by WISCOJIM

What you are seeing is the flyback core and retaining clamp.



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Yup, now that I have time to look a little closer. Thanks.