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-   -   My new CTC-11! (http://www.videokarma.org/showthread.php?t=268705)

TUD1 03-26-2017 12:39 PM

I adjusted the vertical linearity asbestos I could when I set it up.

jr_tech 03-26-2017 01:18 PM

Got another 6EM7 to try?

jr

IsthmusTV 03-26-2017 02:42 PM

I couldn't get the vertical linearity good on my CTC-11 until I recapped the vertical board:
http://i1216.photobucket.com/albums/...ps64ceacba.jpg

Here's the whole restoration thread: http://www.videokarma.org/showthread...ight=IsthmusTV

Congrats on yours! I'm glad your CRT is good.

Clark

TUD1 03-26-2017 02:49 PM

Yeah, that would probably help. Unfortunately, I have no components other than what I can get out of parts chassis. I'd be reluctant to use those crappy yellow caps in a sweep circuit of a TV. I've heard of people having problems with them. If I was going to really restore a set, I'd be using Sprague Orange Drops.

Kevin Kuehn 03-26-2017 02:50 PM

Quote:

Originally Posted by old_coot88 (Post 3181306)
On the convergence panel there's a little selenium stack which is likely bad and can cause shifting-convergence woes. It's either 3 or 4 sections (can't remember which) and can be replaced with fast-switching type Si diodes.

Schottky? Got a type number you can recommend?

Kevin Kuehn 03-26-2017 03:09 PM

Quote:

Originally Posted by TUD1 (Post 3181320)
Yeah, that would probably help. Unfortunately, I have no components other than what I can get out of parts chassis. I'd be reluctant to use those crappy yellow caps in a sweep circuit of a TV. I've heard of people having problems with them. If I was going to really restore a set, I'd be using Sprague Orange Drops.

There's a lot of misinformation floating around regarding capacitor brand loyalty, but unless you're using NOS Sprague, any new ones are coming from the far east, so likely from the same manufactures as the pretty yellow ones. :)

Electronic M 03-26-2017 04:31 PM

Quote:

Originally Posted by TUD1 (Post 3181320)
Yeah, that would probably help. Unfortunately, I have no components other than what I can get out of parts chassis. I'd be reluctant to use those crappy yellow caps in a sweep circuit of a TV. I've heard of people having problems with them. If I was going to really restore a set, I'd be using Sprague Orange Drops.

The yellow caps are fine I've used them exclusively (ignoring being too broke or away from sources of new parts) till the last year in my radio and TV restos, and have never had a problem with them. I think I've only heard of others finding 1-2 bad ones in all my time. I've found other types cheaper in bulk last year online (finally started buying parts online then) so I've been mixing other new stock in.

Just gotta be careful not to melt the case on the yellow ones with the soldering iron...Too deep and you ruin them that way.

TUD1 03-26-2017 05:23 PM

Quote:

Originally Posted by Kevin Kuehn (Post 3181323)
There's a lot of misinformation floating around regarding capacitor brand loyalty, but unless you're using NOS Sprague, any new ones are coming from the far east, so likely from the same manufactures as the pretty yellow ones. :)

So Sprague is making capacitors in China now, huh. Well now I'm thoroughly disgusted. :puke2:

Kevin Kuehn 03-26-2017 06:45 PM

Quote:

Originally Posted by TUD1 (Post 3181333)
So Sprague is making capacitors in China now, huh. Well now I'm thoroughly disgusted. :puke2:

http://www.antiqueradios.com/forums/...95708&start=20

TUD1 03-27-2017 10:38 AM

1 Attachment(s)
Did dynamic convergence for about two hours this morning. Got it as good as I possibly could.

Jon A. 03-27-2017 06:32 PM

Quote:

Originally Posted by TUD1 (Post 3181333)
So Sprague is making capacitors in China now, huh. Well now I'm thoroughly disgusted. :puke2:

In another century North America will likely be a real-life nation of Panem.


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