CurtPalme.com Home Theater Forum

**Curt Palme**

Now I've gone and done it. Someone local wanted me to swap out the tube in an RP set for him, something that I normally don't do, but I figured, sure, a quick $50, why not.

So the rubber ring that was squished between the tube and LC frame was toast, didn't have anything here, so I simply used a bead of bath type silicone around the edge of the tube, let it dry a few days, and filled it with glycol.

Either I wasn't paying attention, or the tube HV lead had a different orientation than the old one did, but the customer called and said that the CRT socket was 180 degrees backwards, and this LC housing could not be installed the wrong way around.

So he brings it back, and I've been fighting to get the tube off.

I doused everything in what I thought was turpentine for 12 hours, this tube is not coming off! I can't even get an exacto blade between the frame and the tube. Short of smashing the $200 tube and eating $150 by buying a new one, what other tricks do you guys hvae to get an old tube out? I even put turpentine in the LC chamber, hoping it was eat at the silicone. no go.

**Curt Palme** · Posted: Sun Jan 03, 2010 7:54 pm Post subject:

((BTW, I think it was turpentine, the label had come off the container, but it sure smelled like crap. Smile

Was a 12 hour soak not enough? It seems like the solution was a bit cloudy before I dumped it.

**AnalogRocks** · Posted: Sun Jan 03, 2010 7:56 pm Post subject:

I've used varsol to brake down RTV type sealant. Not sure what it would do for bathroom caulk though.

LOTREE · Posted: Sun Jan 03, 2010 7:56 pm Post subject:

Quick Google search: Dicone NC9 ? What about brake fluid?

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

try gasoline.

Athanasios

**Curt Palme** · Posted: Sun Jan 03, 2010 8:00 pm Post subject:

I'll try both.

I've got brake fluid here...ditto for gas.

LOTREE · Posted: Sun Jan 03, 2010 8:03 pm Post subject:

If that fails what about a Heated exacto blade? Then you can play with fire and flammables, in a well ventilated area of course! Thumbs Up

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Carburetor cleaner.

Matrix · Joined: 06 Sep 2006 Posts: 123 Location: Indianapolis, IN

Really fine dental floss and saw down through the silicone. Really fine monofilament fishing line may work too.

LOTREE · Posted: Sun Jan 03, 2010 8:26 pm Post subject:

Ah, I just remembered! From working at Speedy Glass for a week we used Squire - Square Windshield Cut-Out Wire to cut the silicone from the glass. Cuts silicone like butter.

**AnalogRocks** · Posted: Sun Jan 03, 2010 8:29 pm Post subject:

A wet spaghetti noodle

dturco · Posted: Sun Jan 03, 2010 8:33 pm Post subject:

2 hammers like this Twisted Evil

http://www.curtpalme.com/Marquee_LC_tube_replacement4.shtm

Com'n you were all thinking it Very Happy

LOTREE · Posted: Sun Jan 03, 2010 8:44 pm Post subject:

Tom.W · Joined: 09 Mar 2006 Posts: 6635

stefuel · Posted: Sun Jan 03, 2010 11:44 pm Post subject:

Break fluid won't touch it. Funny because it raises hell with paint. Gasoline will soften it up given the bulk of it has been removed by cutting. Give it 24 hrs and it will turn to snot.

**Curt Palme** · Posted: Sun Jan 03, 2010 11:52 pm Post subject:

OK, thanks! Got brake fluid in there now, so I'll leave that in until tomorrow, then I go with the gas. Smile

cmjohnson · Joined: 03 Apr 2006 Posts: 5180 Location: Buried under G90s

Place a wooden block on your workbench that is small enough to go through the LC chamber and bear on the CRT face. Place the
assembly on the block. Using bar or pipe clamps, clamp the LC housing to the bench and slowly tighten the clamps. What you're
doing is pulling the LC assembly down with pressure while the CRT is kept from moving.

The block on the CRT face should be as closely sized to the CRT face as possible.

I use this technique to strip the CRTs out of Marquee LC assemblies. It's quick and efficient and I've never broken a tube.
(Yes, you do want to remove or at least cut as much of the silicone potting out first.)

CJ

km987654 · Posted: Mon Jan 04, 2010 8:03 am Post subject:

With all the crap you have poured over this tube it will probably all turn to "snot" tomorrow oh except for the silicon.

Barco housings are fitted so tight you cannot get a blade between the tube face and the LC tank.

CJ has the best solution.

**AnalogRocks** · Posted: Mon Jan 04, 2010 4:44 pm Post subject:

How's it going over there Curt?

**Curt Palme** · Posted: Mon Jan 04, 2010 4:52 pm Post subject:

Haven't gotten to it yet.. Smile