Zenith Model 5119

[Mal Fuller]

In your caption you reference a "FBP CRT."
I hope not. Your set requires a 21FJP22 for the safety of its laminated safety glass. The 21FBP22 is for installation in sets which have a separate safety glass in front of the CRT.

[marty59]

Originally Posted by Mal Fuller

In your caption you reference a "FBP CRT."
I hope not. Your set requires a 21FJP22 for the safety of its laminated safety glass. The 21FBP22 is for installation in sets which have a separate safety glass in front of the CRT.

Here's a safety glass for a Zenith with the FB tube. They are thicker and have that glossy/shiny appearance. The FJ's are thinner, yet bonded with a satin/low gloss look.

[reeferman]

Ah...the joys of changing a non-bonded tube like for like, firing it up, then discovering dirt between the CRT and face plate!
Personally, I was glad (no, ecstatic) when the non-bonded types were replaced by the bonded types in the aftermarket supply chain.
Phil

[dieseljeep]

Originally Posted by marty59

Here's a safety glass for a Zenith with the FB tube. They are thicker and have that glossy/shiny appearance. The FJ's are thinner, yet bonded with a satin/low gloss look.

I think the thinner glass used on the bonded CRT's is not tempered. The resin was the implosion protection.
When removing the nasty resin from a CRT with a cataract condition and reinstalling with a silicone resin around the diameter, all implosion protection is lost.

[Kevin Kuehn]

Originally Posted by dieseljeep

I think the thinner glass used on the bonded CRT's is not tempered. The resin was the implosion protection.
When removing the nasty resin from a CRT with a cataract condition and reinstalling with a silicone resin around the diameter, all implosion protection is lost.

That's a scary thought, considering how many FJP's have been modified in that way.

[marty59]

Originally Posted by Kevin Kuehn

That's a scary thought, considering how many FJP's have been modified in that way.

True, but how many times to you hear of a tube imploding upon itself for no reason? A tube may "go to air" after years of storage but I don't think of them as a ticking time bomb either. And as long as you handle them safely I tend to think we're okay.

And FWIW, that front glass is supposed to aid in radiation protection too. I'd like to find some data to back that up though....

[Kevin Kuehn]

Originally Posted by marty59

True, but how many times to you hear of a tube imploding upon itself for no reason? A tube may "go to air" after years of storage but I don't think of them as a ticking time bomb either. And as long as you handle them safely I tend to think we're okay.

And FWIW, that front glass is supposed to aid in radiation protection too. I'd like to find some data to back that up though....

I agree. I'm sure these safety features were mostly aimed at the unaware consumer, in an attempt to fend off crazy wacko lawsuits.

[marty59]

Originally Posted by dieseljeep

I think the thinner glass used on the bonded CRT's is not tempered. The resin was the implosion protection.
When removing the nasty resin from a CRT with a cataract condition and reinstalling with a silicone resin around the diameter, all implosion protection is lost.

Yep! I'd agree.

And I don't believe any one of us here would get mad at a football game and throw a brick at the set either!!

[Kevin Kuehn]

So you guys feel that we might as well leave the separate glass off after an FJB conversion to non bonded?

[dieseljeep]

Originally Posted by Kevin Kuehn

So you guys feel that we might as well leave the separate glass off after an FJB conversion to non bonded?

Some protection is better than none!

[Kevin Kuehn]

Originally Posted by dieseljeep

Some protection is better than none!

Oh, OK. I was just checking. It would be cool if someone would after market a poly carbonate or some type of acrylic lens that fits over an FJB. Maybe make a nice rubber gasket to go with it.

[marty59]

Originally Posted by Kevin Kuehn

So you guys feel that we might as well leave the separate glass off after an FJB conversion to non bonded?

It's good to reinstall for what it was intended for, to cut down on glare that the FB's would have more of, and originality.

I have a local jobber rebuilt FJ in my RCA CTC-16E that I purchased back in the day. He left the front glass off of claiming that it wasn't necessary and you would get a better picture!

Knowing what I know now, I don't believe he wanted to deal with the bonding process (he's gone now). If I can salvage a front glass for it I may install it for restoration purposes.

I must say it puts out a nice picture!!

[dieseljeep]

Originally Posted by marty59

Yep! I'd agree.

And I don't believe any one of us here would get mad at a football game and throw a brick at the set either!!

Hey Kevin! The Packer's last game of the season is on today.
You better watch the game on a different set.