'66 Portacolor Convergence Hell. - Videokarma.org TV - Video

zenith2134 · #1 09-23-2008, 07:10 PM

I installed a nos 11sp22 CRT in this set since the old one was very very dim. Well. the New one is bright and sharp but I cannot get the convergence right for the life of me. I must've spent 3 hours trying everything i know of and its still awful...

I mounted the static magnet assembly block 1.5" from the CRT base as the service manual instructs....and the purity ring is in the right place. Its so frustrating, I have no idea where to go from here. And when I get the convergence to a point thats *almost* right the raster is tilted and misaligned.

What gives? Am I missing something here? Since its an inline, this should be easy!

sampson159 · #2 09-23-2008, 07:49 PM

it is never easy! even the old delta guns are getting harder-or i am getting older.take a break and walk away from it.when you get back,it will happen.set up more than a few of those and they can be a nightmare.they do have a pretty picture though.

*zenithfan1* · #3 09-23-2008, 07:53 PM

What adjustments have you tried with the deflection yoke? Have you tried sliding it back a little, if that helps you can stick some wedges in there.

zenith2134 · #4 09-23-2008, 08:03 PM

I slid the purity magnet /assembly/and yoke back and forth and itd doesn't change much.

I also used an external degausser just in case but no luck.

*zenithfan1* · #5 09-23-2008, 08:04 PM

Man, that IS a real head-scratcher....

andy · #6 09-23-2008, 08:16 PM

...

*zenithfan1* · #7 09-23-2008, 08:21 PM

Good to know, I've never had to mess with the convergence on my Porta-Colors before.

zenith2134 · #8 09-23-2008, 09:47 PM

Thanks, Andy. Wasn't sure if I should mess around with those glued magnets. Tomorrow's another day! What a relief though-- thought I might've shorted the color circuits or something....wasn't thinking straight.

The NOS 11SP22 came from AK member Dave A. who had it in its original box all these years! I'm excited to use the TV again, since although he shipped me the tube months ago, I got frustrated and haven't messed with it in a long time.

Shame it only has a short time left until it'll be considered a Sorta-Porta-Color (tethered to a converter box)

Dave A · #9 09-23-2008, 10:34 PM

Z,

Rooting for you but not your stinkin' Mets. Go Phillies.

Dave A

zenith2134 · #10 09-24-2008, 09:52 AM

Hey Dave! The Mets did good yesterday! But..I'm more of a Yankee fan anyway. (Gonna miss that stadium) The Mets will probably blow it unfortunately....Can't go against NY teams but they have a bad track record....

But the Phillies? Nah....

zenith2134 · #11 09-25-2008, 06:03 PM

OK update.... I tweaked the magnets which were glued down and now convergence is perfect....BUT (and its a big but) the purity is a mess and won't set. WTF? I never had so much trouble setting up a TV. The purity magnets affect the purity, but no way i set them seems to be right. The colors are way way off and its a total mess.

*zenithfan1* · #12 09-25-2008, 06:42 PM

Try degaussing it {if you haven't already} then try purity again. I wonder if the shadow mask is bent like they're discussing on the other thread in here?

Dave A · #13 09-25-2008, 07:08 PM

Try to disconnect the blue and green guns. I forget if they are hard-wired or spade connected somewhere. Then degauss with a degauss ring. If you don't have one I can send mine for loan. Then try the rings for a pure red raster.

zenith2134 · #14 09-25-2008, 07:38 PM

Well I slid the yoke back and got a pure red raster with the other drives all the way down. But... The purity only adjusts correctly so that the raster is down about an inch therefore cutting off the bottom of the picture, no matter how i set height or linearity. Otherwise, perfect pic!

zenith2134 · #15 09-25-2008, 07:54 PM

Heres a couple of pictures of where I'm at. Darn thing has great color and is much much brighter thn the old tube was. Just a bit of a struggle.