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Main => Monitor/Video Forum => Topic started by: Level42 on June 28, 2009, 01:02:45 pm

Title: How to do the final (edge) convergence on a color CRT
Post by: Level42 on June 28, 2009, 01:02:45 pm

Already posted this in my SW cockpit restoration thread, but thought it would be good to mention this in the monitor section too.

I did the final (edge) convergence on my Amplifone and I figured some of you might like to see how it's done.

As mentioned, this is not a full converging because the center area was already perfect and it's just getting the corners convergence correct.

http://www.youtube.com/watch?v=QYB1L8AIeq4

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: Kevin Mullins on June 28, 2009, 03:42:01 pm

Very well done.... I really appreciated watching that.
The corners always seem to be the last and hardest thing to get quite right on some tubes.
 :cheers: 

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: SailorSat on June 29, 2009, 05:32:20 pm

Hm that may just sound a little dumb but where can you get those white strips?
What are they called?

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: grantspain on June 29, 2009, 05:59:09 pm

really excellent work,thanks :cheers:

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: Level42 on June 30, 2009, 05:25:44 am

Quote from: SailorSat on June 29, 2009, 05:32:20 pm

Hm that may just sound a little dumb but where can you get those white strips?
What are they called?

Very hard to find them. Convergence strips is what they usually are called. I once sent an email to http://www.hawkeyepicturetube.com/ and they said they could deliver them.

Thanks for the compliments guys, I hope to make a video of a full convergence job in the near future....

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: Ummon on June 30, 2009, 11:13:46 pm

That's neat. Perhaps one could make their own strips?...although those look plastic coated/encased or something. And I thought having a mirror on hand in these matters was a given?

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: Level42 on July 01, 2009, 11:30:18 am

Yeah I use a mirror for the more "course" adjusting. However, it may be my eyes, it may be the mirror, or it may be that you double the distance you are looking at by looking through a mirror, but for the fine adjustments I prefer to look directly on it whenever possible.

Title: Re: How to do the final (edge) convergence on a color CRT
Post by: Mauzy on July 01, 2009, 05:32:50 pm

YES! Now I just need to find some of these strips! I have two 19s that have bad corners...