510UXB22 Replacements

[Dreamsbeard]

Thanks Eric!

[lnx64]

Agree, thanks Eric. If someone has a problem with me, just send me a PM so it can stay out of public and we can work this out. There's no need to involve everyone else.

[dieseljeep]

Originally Posted by lnx64

I can't imagine too many times.

Anytime you have to rejuvenate, consider the CRT on the way out. You only have so much cathode material.

[lnx64]

This thread will have to be moved to the solid state section, not sure if I can do that myself or not, couldn't see..

But anyway, I borrowed a CRT tester from my old job, it was a B&K, as for the model I don't remember. I hooked it up, and started testing.

Red gun - Very very weak.
Green gun - Very strong.
Blue gun - Meh. It's border lining of good and bad.

So, I went ahead and did what I needed too, and hoped I didn't fry the CRT. After that was done, tested again. Now, all 3 guns appeared to be holding strong. Took several attempts to get this, but it's now holding strong. Red is still not as strong as green though, but all are "in the green" now though so to speak.

Turned on the TV, now all the colors were off again, and so I had to re-calibrated the colors using a colorimeter probe. Got the RGB levels to where it needs to be, and have been sitting down watching the TV every night when I got home from work. I have been holding off posting about this for the past couple days just to be sure it is going to hold, and so far, I tested last night before returning the tester, it's still in great shape now.

And now here's what my picture looks like: http://img.photobucket.com/albums/v3...n/colors-2.jpg

In this picture you wouldn't notice it, but the ceiling light was actually on. That's how bright the picture was, that the TV's bezel looks so dark as if the room light was off. I hadn't adjusted contrast and brightness yet before taking this picture.
Notice how vibrant all the colors are, without a single bit of bleeding or smearing. The color control isn't even cranked up in this picture, I set the color and tint via SMPTE color bars using a blue filter.
The focus on the CRT also seems to have improved which caught me off guard. Because I thought that was a function of the flyback, but it seems the CRT has gained focus too, as you can see in the blue sky, those are the sharpest scanlines I have ever seen on this TV.

For reference, the picture used to look like this, you can see the slight bleeding of colors on the reds.

http://img.photobucket.com/albums/v3...on/photo-1.jpg

Lets hope this lasts!

Side note, this old effect: http://img.photobucket.com/albums/v3...n/IMG_0510.jpg

When on a completely black screen in a very dark lit room, is completely gone now. I can be in a darker than dark room with this TV on, on a black screen, and think the TV was off.

[radiotvnut]

The results will only be temporary; but, how temporary is anyone's guess. It could fall off in a week, a month, or you could get over a year out of it. The whole idea behind rejuvenating a CRT is to try and add a little extra life to a tube while the owner makes preparations to either replace the CRT or the TV. Hopefully, this one will last long enough to give you time to track down a reasonably priced replacement. And, yes, low emission can cause poor focus.

[lnx64]

I do hope to find a replacement or compatible CRT. Hopefully this lasts long enough till then. I even recently installed new bias multi turn pots.

[colorfixer]

If you're trying to replace a 90 degree 19" CRT from the 1980's-1990's they're usually interchangeable as long as the number of pins are the same and the neck diameter matches. In arcade monitors the general rule of thumb is use the original yoke that came from the recipient unless, of course the DC resistance of the two yoke windings are the same or really, really close.

In the tv to arcade swap, the tube of choice, 19VJTP22 is hard to find. I usually keep an eye out for early 1990's 19" round corner TVs which I know to have the right number of pins and neck diameter and go through the convergence ritual. There are a lot of 19" TVs around.

[lnx64]

Ok, thanks for the recommendation.

I was watching a VHS tape, and even after rejuvenation, I'm seeing this now.

http://img.photobucket.com/albums/v3...psb6d2f32f.jpg

This looks FAR worse than it ever did. But here's the kicker, it's only doing it on this tape, not on cable TV, DTV, or DVD's. I tried the same scene from the DVD, and it did NO smearing whatsoever.

CRT still tests great, doesn't look like it's lost anything so far.

I hope this is just a bad tape.

[radiotvnut]

I think it's a bad tape. If it were the CRT, it would be doing it on every source.

[eberts]

510UXB22 is equiv to 19VJXP22. Common, used in many Sears, Sanyo, Sharp sets.
19VJTP22 will not sub the 510UX.

[lnx64]

Hmm, apparently Sears has one brand new.

http://www.searspartsdirect.com/part...&prst=&shdMod=

But it's a 19VJXP22R. But, the price. Wow that's a lot of money for a tube.

[ChrisW6ATV]

$130 for a brand-new (or even well-rebuilt) CRT does not seem high at all. Remember, it is for a TV that cost $350 in 1982 dollars, more or less, and not for a last-gasp $99 CRT set from 2005.

[lnx64]

Ahh that's quite true. I keep forgetting the value of this TV back then.

Hmm, new CRT, new flyback, this isn't that bad of a situation actually. It's almost like a new TV (minus the capacitors are still original).

Sadly though since loosing my job I won't be able to afford a new TV, but I am going to keep this bookmarked. Hopefully by the time I get a new job I can afford it.

[AUdubon5425]

Wasn't there a thread about the CRTs listed on Sears' website not actually existing in stock?

[lnx64]

I really hope not.

I'll be pissed if the website is lying about the stock.