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karmat63
Joined: 19 Dec 2007
Posts: 157
Location: Italy
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| Posted: Mon Sep 06, 2010 1:38 pm Post subject: Removing black silicone from Marquee LC chamber |
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Hi guys,
I'm going to replace a full set of tubes with a like new one (9,9,9), with full LC assembly. First, I'm going to change glycol with fresh one and replace the bellows with new Nashou's type, that I got sometimes ago.
So I cut the bellow to be replaced, trowing away the old (cloudy) glycol. I found the the old bellows and the C element were both sealed with black silicone and so, removing the bellow some silicone still remained attacked to the C element and the LC chamber. How could remove the residual silicone and which would be the best way to clean the inside of the LC chamber (small fungus there) and the C element?
Thanks for your answers,
carmine
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Mon Sep 06, 2010 1:54 pm Post subject: |
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small plastic scraper to get the most silicone of the housing so you do not damge the housing.
cleaning is easiest with dishwashsoap and water (demineralised so it does not leave calcium stains behind) but plain hot tapwater will work too and dry with a hairblower.
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marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Sep 06, 2010 2:02 pm Post subject: |
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I use a razor blade which seems to work well. What I have also found with these housings is that you want to run a small bead around the front edge of the housing so that the front of the tube contacts it, and seals the glycol in. Seems that the large amount of silicone around the tube sides simply holds it in place, but it's the front small bit of silicone that seals in the glycol.
(spoken from experience after repairing several tubes that leaked where I didn't put the front bead around the tube face).
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Mon Sep 06, 2010 3:48 pm Post subject: |
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I just soak the whole thing in a 5 gallon bucket of gasoline after i removed the outer Housing assembly so it fits in better. Then i cut a hole in the top to allow the tube neck end to stick out and to help reduce gasoline evaporation. Then once i separated the tube from the housing i used the razor like curt and then steel wool to get the rest. i also did not use any silicon to mount the bellows.
Athanasios
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"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
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Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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karmat63
Joined: 19 Dec 2007
Posts: 157
Location: Italy
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| Posted: Mon Sep 06, 2010 4:00 pm Post subject: |
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Maybe I was not clear in my original post (sorry: language barrier  ), but I don't need to remove housing: I bought a set of tube with full housing. I only need to change glycol and replace bellow with new type before installing the set. But, removing the old bellow from the LC assembly, some residual RTV silicone remained attacked on the face of LC assembly and around the C elements. I tried old fashioned razor blade and it did most of the work: only a tiny bit of silicone is still sticky to housing face, but I don't think it would be a problem.
PS.: I know I don't need to seal your bellows, Nash, as I installed one that way about 8 months ago, and had no problem at all...
Thanks
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Mon Sep 06, 2010 4:04 pm Post subject: |
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| karmat63 wrote: | Maybe I was not clear in my original post (sorry: language barrier ), but I don't need to remove housing: I bought a set of tube with full housing. I only need to change glycol and replace bellow with new type before installing the set. But, removing the old bellow from the LC assembly, some residual RTV silocone remained oattacked on the face of LC assembly and around the C elements. I tried old fashioned razor blade and it didd most off the work: only a tiny bit of silicone is still sticky to housing face, but I don't think it would be a problem.
PS.: I know I don't need to seal your bellows, Nash, as I installed one that way about 8 months ago, and had no problem at all...
Thanks |
Oh ok, but if you do not remove all the silicon then I might use silicone. using no silicon only works if there is no remaining silicon on the metal tube face housing. try this then soak a rag with gasoline and place it over the tube face plate where the silicon is stuck on. Then put a plastic bag over that and tie it around the tube so the gasoline does not evaporate from the rag. maybe put a few small holes for some vapors to escape for safety. then after a day check to see if the silicon softened up, it should wipe of or need very little scraping.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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karmat63
Joined: 19 Dec 2007
Posts: 157
Location: Italy
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| Posted: Mon Sep 06, 2010 4:34 pm Post subject: |
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Very clear, thanks Nash.
Carmine
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