Weekend CRT Cateract remove

[Tom S]

Well if it's warm here I might try the Sun method to remove the faceplate on my 21 CRT. I'm hoping it works. 21FJP22. From what I've heard the Sun works good and much safer I hope.

[mstaton]

it works pretty good. Leave it out for a couple of hours. You still may have to use a heat gun but maybe not.

[Tom S]

Only a 12" area is still bonded. The rest is pretty bad so I'm hoping for the best.

[miniman82]

RACS says the best way to remove the panel is to put the tube into an oven, slowly raising the temperature to around 350*F. Of course, I've never seen a consumer over large enough to accommodate a tube that large.

[snelson903]

take pictures and post your steps

[DaveWM]

even light pressure around the perimeter during the exposure to the sun. I use WOOD clothspins, dig out some of the pva around the edge and tap them in LIGHTLY just snug. Check them after about 10-20 min and re tap them in.

Assuming this is the white hard pva not the green goo.

[lnx64]

Originally Posted by miniman82

RACS says the best way to remove the panel is to put the tube into an oven, slowly raising the temperature to around 350*F. Of course, I've never seen a consumer over large enough to accommodate a tube that large.

Heh, got a pizza store near by?

[dieseljeep]

Originally Posted by lnx64

Heh, got a pizza store near by?

Most of the pizza ovens I've seen have long narrow openings.
If the PVA is that bad, I would use the sunlite and guitar string method.

[marty59]

Originally Posted by DaveWM

even light pressure around the perimeter during the exposure to the sun. I use WOOD clothspins, dig out some of the pva around the edge and tap them in LIGHTLY just snug. Check them after about 10-20 min and re tap them in.

Assuming this is the white hard pva not the green goo.

Popsicle or tongue depressors too and stack/wedge them as required. Just keep in mind about tapping or "pushing" them in and knowing when to walk away. Also, take some duct or packing tape and loosely tie the mask to the crt. That way, if it happens to pop off it won't go crashing down to the ground!

[mstaton]

I would avoid guitar strings on the RCA catarcts. Save that for the green Zenith ones. You may scratch the crt with the strings. Wood or plaric wedges are the best route. If it's mostly gone, it should be relatively easy. make sure you have some weight in the can the crt is in and put a blanket around the can or put it on the grass in case the lens slips out of your hands.

[Tom S]

Does the PVA remain soft after the glass pops off? or do I leave it in the sun to keep it soft??? I'm hoping for good weather tomorrow. Thanks guys.

[ctc17]

Put a black plastic trash bag over the top to help absorb and trap the heat. If its 90+ it will come off in some hours. pva is like flexible soft plastic that peals off in chunks.

Use small pieces of double stick tape along the edge as spacers to reattach the glass then seal with silicone 1. Seal while crt is hot/warm so pressure is reduced as it cools off.

Plenty of videos from me and others on youtube.

Hot wire is for green halo only zenith style only.

Be careful and use safety gear!

[snelson903]

Originally Posted by lnx64

Heh, got a pizza store near by?

pizza that sounds good to

[Tom S]

Thanks for the help guys. Like I say hoping for warm in Wisconsin tomorrow.

[Electronic M]

Originally Posted by mstaton

I would avoid guitar strings on the RCA catarcts. Save that for the green Zenith ones. You may scratch the crt with the strings. Wood or plaric wedges are the best route. If it's mostly gone, it should be relatively easy. make sure you have some weight in the can the crt is in and put a blanket around the can or put it on the grass in case the lens slips out of your hands.

If you use a 5 gallon bucket (most are deep enough for a roundy CRT or a rectangular with the neck hardware and convergence board still attached) it is usually rather stable and likely not as top heavy as I envision a trash can would be.