Digging into the CTC-9

[zenithfan1]

Originally Posted by DaveWM

My understanding is the PVA layer is what makes the glass safty glass.

without it you just have more glass breaking and flying around. Perhaps I am all wrong on this but I thought that is how saftey glass was made (two layers of glass with a bonded memebrane that keeps the glass from shattering.

That is correct. But, when done the way we've been taking about, it is basically going back to the "picture window" type of safety glass, only curved to fit the screen instead of being further away. It's better than what's on my avatar Zenith, NO safety glass at all. I'm looking for the correct lens with the gasket. The 21FBP22 was an unbonded tube and uses the curved glass with an air gap like after a cataract surgery on a FJP but with the gasket rather than the double face tape. (preferably 3M automotive tape) I think it is safe.

[leadlike]

I ask about developing issues with the crt because of overdriven controls because the SAMS is not very specific-calling for 23.5 kv and the schematic giving a range of 15.5-21kv.

Which controls for gun color balance would be the deadliest to overdrive? G1 (background) or G2 (screen).

My final question is that this set originally had a 21cyp22 in it. Are there any mods or considerations that need to be taken in for the 21fj that is currently installed in it?

[andy]

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[zenithfan1]

Originally Posted by andy

After the reports of implosions we have seen, I wouldn't even consider running a set without a safety glass. If something hits the screen just right, or the clamps are a little too tight, it could send glass everywhere.

No worries, it's not in use. It's in storage right now. I fianally found a flyback for it this year at the ETF convention. I'm going to restore it soon, and install safety glass