What is this?

[ctc17]

This is the mask out of the tube UPS CRUSHED. This will give you an idea of just how hard core the mask is. Maybe the spot welds broke on one of your tabs and the mask moved back a tad.

[miniman82]

sweitzel: I don't think the gun itself is crooked, just the base.

ctc17: OMG, those bastards DESTROYED that tube!

You're right the mask looks quite sturdy, though as you have seen it's possible for UPS to ruin ANYTHING. Don't those people have standards? I mean, how is their business model viable if all they do it break stuff all the time? To answer your question, no it did not have safety glass because all rebuilds have to have the panel off in order to go through the oven. My set has a flat pane of glass anyway, I wouldn't put a bonded tube in there if I could possibly help it.

freakaftr8: I think what you are seeing is just the edge of the last color bar, I don't remember if there's another one. It's definitely not a shadow.

To all who asked: I'll take a pic with a blank raster for you. I'll cycle through each gun too, so you can see what I mean about how the pattern changes.

[eberts]

It is not a gun problem.
Even if the gun was installed improperly, you would still be able to get purity, you would not be able to converge it.
Usually the frame of the shadow mask does not dislodge from shipping, the mask part will bend and get a dimple in it when dropped. In your case, it looks like it was dropped hard enough to pop the mask frame right out of the contacts embedded in the front glass panel.

[miniman82]

Ah well, when life hands you lemons...

At least I got a cool signature block now! :p

[ctc17]

Who will be the first to make that their avatar?

The front is thick, over 1/2" so it could take a really hard hit and not break. Maybe even hard enough to pop the metal out and move it and not break the glass. Thats why I was asking about the safety glass because it would break long before the crt.

Did you try contacting Scotty? or is he done and gone now?

I had mine insured for $1000 and collected just about all of it.

[miniman82]

Originally Posted by ctc17

Did you try contacting Scotty? or is he done and gone now?

I have made arrangements with Scotty to drop the CRT back off at UPS, pending a damage claim- it's obvious now that the mask is off kilter.

I looked through the glass, and you can clearly see it has come off one of those locating pins on the inside. It slid towards the front, even taking some of the aluminized coating with it as it went. So, it's on it's way back.

I gotta say, I know how he's been in business for this long- CUSTOMER SERVICE. Something you'll never get when you call a 1-800#, and the guy on the other end rattles off a prompt card so fast in a thick accent you don't know what hit you. He even offered to rebuild my 'dud' as an act of good faith! Not that I have a dud, I ordered this tube as a spare, my original CYP is still perfect. We'll see what happens, hopefully we can work something out.

3 cheers for Hawkeye!

[jr_tech]

Originally Posted by miniman82

I have made arrangements with Scotty to drop the CRT back off at UPS, pending a damage claim- it's obvious now that the mask is off kilter.

I looked through the glass, and you can clearly see it has come off one of those locating pins on the inside. It slid towards the front, even taking some of the aluminized coating with it as it went. So, it's on it's way back.

I gotta say, I know how he's been in business for this long- CUSTOMER SERVICE. Something you'll never get when you call a 1-800#, and the guy on the other end rattles off a prompt card so fast in a thick accent you don't know what hit you. He even offered to rebuild my 'dud' as an act of good faith! Not that I have a dud, I ordered this tube as a spare, my original CYP is still perfect. We'll see what happens, hopefully we can work something out.

3 cheers for Hawkeye!

BRAVO! Indeed, 3 cheers for Scotty/Hawkeye!
Thanks for taking the additional pictures, it is very interesting seeing the moire' pattern with the 4 different gun illumination conditions.

Earlier, (post 2) I opined that the mask was tilted further away from the screen at the bottom. A little later, old_tv_nut (post 25) stated that the mask was "leaning back, that is the upper part is farther away from the face". Thinking more about it, I think old_tv_nuts' description was correct, and I was thinking backwards... could you verify if it is the top or the bottom of the mask that has slid closer to the screen ?

All this talk of shipping damage has me worried... today I am expecting a Celestron telescope to arrive via UPS... got my fingers crossed!
jr

[old_tv_nut]

Originally Posted by jr_tech

BRAVO! Indeed, 3 cheers for
Earlier, (post 2) I opined that the mask was tilted further away from the screen at the bottom. A little later, old_tv_nut (post 25) stated that the mask was "leaning back, that is the upper part is farther away from the face". Thinking more about it, I think old_tv_nuts' description was correct, and I was thinking backwards... could you verify if it is the top or the bottom of the mask that has slid closer to the screen ?

jr

Actually, I'm now guessing that the top is moved toward the screen. Moving either way from the correct position will cause a tighter blob pattern. I should not have assumed which way until Nick posted an observation.

[freakaftr8]

I may go as far as to guess considering the moire pattern on the screen, not only did the mask come loose, but it way have deformed in the CRT, dimples and small creases causing the pattern you are seeing.

[Eric H]

This is a real bummer.

I had thought about sending my middling CYP off to Scotty before it was too late but I was worried about it getting broken.

I also have a NOS FJP I got about 10 years ago sitting in a closet, I assumed it's OK because it wasn't broken but now I'd like to try it in the set to be sure.

If it was 1968 there would be a market for a tube like that.

[jr_tech]

Originally Posted by Eric H

This is a real bummer.
I had thought about sending my middling CYP off to Scotty before it was too late but I was worried about it getting broken.

One possibility could be that the initial factory weld of the spring clip to the shadow mask assembly was poor to begin with, and worked loose in shipping...this appears to be a rare failure! If I needed to have a tube rebuilt, I would not hesitate to send it!

jr

[miniman82]

On a side note, there is a very obvious difference between the brightness level of the old CYP and the sulphide FBP. The FBP is a ton brighter, and doesn't seem to drag down HV as much. Since my literature refers to the FJP/FBP's as sulphide, does that mean the CYP/AXP's are rare earth?

[old_tv_nut]

Originally Posted by miniman82

On a side note, there is a very obvious difference between the brightness level of the old CYP and the sulphide FBP. The FBP is a ton brighter, and doesn't seem to drag down HV as much. Since my literature refers to the FJP/FBP's as sulphide, does that mean the CYP/AXP's are rare earth?

CY/AX are pre sulfide and and also therefore pre rare earth, which came after all- sulfide, replacing the sulfide red, first with a vanadate and shortly thereafter with the europium, which is now the standard formulation.

I forget what's in the CY, may be the same as the AX. the AX had essentially the same phosphors as the 15G, including NTSC green. That's why I wish the rebuild of my AX had been successful.

[old_tv_nut]

Miniman, if you do decide to get another tube, I would really recommend you pick it up yourself or ask around here if anyone can pony express it for you. It rides very nicely in the back seat with a blanket to cushion it and the seat belt holding it.

[miniman82]

Agreed, but no one is willing to sell...


I predict everyone with a round tube in general, color or B&W, will become increasingly hoardish in the coming years. The CRT's days are numbered, and the supply of good jugs is drying up. Add to that the fact that the last (reputable) rebuilders are closing their doors forever, and you can see that the future looks bleak for this hobby as far as replacement parts are concerned.