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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 4:10 am Post subject: Got the Marquee... |
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Well I was the one that got the 9501LC in Rock Island on govliq recently. I put in a bid for what I thought it would be worth in parts, thinking that it was under what it would probably go for. I was shocked when I won it (for my max bid of course) and wondered what I had gotten myself into… I hope that there are not any hard feelings if I outbid anyone or maybe I saved you from a mess, not sure.
The projector arrived recently; when I unloaded it I felt a little glycol on the bottom edge of the case I had that oh crap what have I done feeling once again. It is however in decent condition as far as I can tell, besides for the cause of the leak, the blue tube is broken. Luckily I think it cracked while it was still on the ceiling so most of the glycol residue was on the top cover. A little has seeped into the chassis, but all of the boards are clean besides for a small spot on the edge of the VIM.
The red tube is perfect, the green has just the faintest sign of wear, and the blue was also in great condition, besides for the giant crack down the face of the tube of course.
I am going to take the projector apart to clean it all up before even attempting to power it on so my questions are:
I have read that denatured alcohol is the way to clean boards. Is there a better way to clean them? Also, where would I get denatured alcohol?
Once I get everything cleaned up, is there anyway I can power on the projector without the blue tube? I would like to see if everything else works before I consider finding a blue tube if possible.
Thanks
David
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Feb 14, 2008 4:26 am Post subject: |
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is it the tube or the lens that is broken? If just the front of the tube is broken you can have a pice of glass cut for it and then silicone it back and refill it with the cooling glycol.
it can be run with out the blu tube on I think you disconnect the g2 lead or the black umbilical. some one else i hope will chime in here for that one.
Denatured alcohol can be found at home depot i believe . Nice score if it powers up you'll have a great machine for under 2 grand with a new blue tube if you cant get that one fixed. also can you list the part numbers odf the boards so we can see if you got a complete machine with out some one taking the better boards. I have seen this first hand . i thought i was getting a refrence 8 marquee and it had all 800 boards in it except for the neck cards, power suplies and vertical and convergance boards. have fun fixing her up! I thinks its the second best part of this hobby, watching it is the first !
Athanasios
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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
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Marquee Modifications and Performance Enhancement
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Feb 14, 2008 4:30 am Post subject: |
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| Nashou66 wrote: | | is it the tube or the lens that is broken? If just the front of the tube is broken you can have a pice of glass cut for it and then silicone it back and refill it with the cooling glycol. |
I don't think he'll be able to do this, it sounds like you're describing an AC instead of an LC tube?? If the front glass is cracked on an LC tube, game over (for that tube). If it's the C-element, that's replaceable.
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 4:50 am Post subject: |
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Unfortunately, it is the tube that is cracked. When I first looked into the lens I thought it was just the C element, but after pulling the lens there is no question that the face of the tube is cracked. Half the glycol has leaked out somewhere either into the tube or out of the top when it was ceiling mounted. I was a little worried that if some glycol leaked into the tube it could short out the neck board. Can I just pull the HV and the G2 connector and be OK?
It would really suck to find all the boards switched. I will try to get the part numbers tomorrow, but it looks fairly untouched. Hopefully I got lucky this time.
I agree fixing these projectors is half the fun. It can be frustrating but always a good learning experience.
Thanks again
David
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Feb 14, 2008 4:54 am Post subject: |
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I can be done as long as the actual tube glass isnt broken. I think VDC has that glass or you can send it to them to do and refill it. I think Terry on AVS stated this before. I also remember another forum member doing it himself by finding a 10 dollar dead tube on e-bay and using that front piece of glass and the glycol from it...now thats wwhat i cal ingenuity! Id give it a shot nothing to loose except some time and you might learn something along the way !
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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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Thu Feb 14, 2008 4:56 am Post subject: |
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Only one way to find out....get the tube assembly out of the machine. If you tilt the tube with the bell (face of tube) up in the air and you see liquid slosh down in the cathode end (the pin end)...the tube is history. It's possible he may get lucky and the chamber just built up pressure and cracked the glass...
That said, were any 950x's made AC? I thought all 950x's were LC?? 
Greg
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Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 5:03 am Post subject: |
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The C element is perfect. I can see where some of the phosphor is missing right around where the crack is. I don't think its possible to fix that right?
Thanks again,
David
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NewbieDAN
Joined: 09 Mar 2006
Posts: 319
Location: Bunbury Western Australia
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| Posted: Thu Feb 14, 2008 5:07 am Post subject: |
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no fixy...sorry
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Sorting the fly sh*t from the pepper
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Feb 14, 2008 5:08 am Post subject: |
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| Nashou66 wrote: | I can be done as long as the actual tube glass isnt broken. I think VDC has that glass or you can send it to them to do and refill it. I think Terry on AVS stated this before. I also remember another forum member doing it himself by finding a 10 dollar dead tube on e-bay and using that front piece of glass and the glycol from it...now thats wwhat i cal ingenuity! Id give it a shot nothing to loose except some time and you might learn something along the way !
Athanasios |
In an LC setup there is no glass to crack besides the tube face itself. The gylcol resides between the tube face, which is probably 1/2" thick glass with the phosphor on the inside, and the C-element, which is plastic. Only in AC setups is there a front glass piece, much thinner than the tube face, that is part of the gylcol chamber. Trust me, I have 11 spare 8" tubes sitting around, and I personally siliconed my 9" tubes into the LC housings 
Edit: Yeah, comm, that tube is busted. Sorry to hear that  Check out the recent "Lugs on ebay" thread, maybe you can get a decent used tube.
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 5:12 am Post subject: |
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Yeah, I was pretty sure of that. Is there any safe way to power it up with glycol in the tube? Or do I have to replace it first to find out if anything else is wrong? I don't think I can pull the neck board off, it wont power on without it connected right?
David
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Feb 14, 2008 5:14 am Post subject: |
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| comm wrote: | Yeah, I was pretty sure of that. Is there any safe way to power it up with glycol in the tube? Or do I have to replace it first to find out if anything else is wrong? I don't think I can pull the neck board off, it wont power on without it connected right?
David |
I know you're chomping at the bit to try this machine out...but I'm really not sure about running it with the tube like that, please wait until Curt or one of the experts chimes in about this. You might have to wait a few days but think of the possible headache you're saving yourself 
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 5:14 am Post subject: |
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I was planing on checking out the ebay LUGs. Looked like a decent way to get the projector repaired for not too much. Any problem with mixing the tubes? The red and green are the stock LCPs.
Thanks again for the help,
David
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Thu Feb 14, 2008 5:20 am Post subject: |
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As much as I want to try it out, I definitely don't mind waiting to avoid any other problems. More than anything I don't want to spend money on a new blue tube only to find out that it needs many boards replaced or something like that. But, if thats what I have to do, oh well.
David
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Nashou66
Joined: 12 Jan 2007
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Location: West Seneca NY
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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: Thu Feb 14, 2008 6:54 am Post subject: |
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| comm wrote: | Can I just pull the HV and the G2 connector and be OK?
David |
Pull the whole CRT socket/neck board off, and disconnect the HV lead from the splitter, and yes, then you can power the set up and the R and G tubes should work.
Having just cut away my first Marquee tube as per the instructions elsewhere on this forum, I can say it's a ROYAL PITA to do. My part time installer/packer/helper ended up getting frustrated and the tube ended up getting smashed. Not a big deal, as the tube had NO SYNC burned dead center of the tube (mint otherwise, dammit!), but beware that a tube that is cracked will be more brittle than one that's still intact. Chances are you'll further break the tube trying to get it out.
Resealing needs a minimum of 3 days to cure. I tried to put glycol in within 24 hours, and got a leak. tried again a second time 24 hours later, it leaked again. A third application, carefully cutting away the old silicone, draining the glycol and drying the LC housing, resealing, and putting a small heater/blower on the area heated the area to an estimated 100 degrees, and that cured perfectly in 48 hours. At room temperature, figure on 72 hours minimum.
A hard lesson learned, I wasted probably 500 mL of glycol..
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu Feb 14, 2008 6:26 pm Post subject: |
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| comm wrote: | Yeah, I was pretty sure of that. Is there any safe way to power it up with glycol in the tube? Or do I have to replace it first to find out if anything else is wrong? I don't think I can pull the neck board off, it wont power on without it connected right?
David |
Hello
Pull the neckboard off, undo the high voltage from the splitter, and leave the yokes connected. Put three inches thickness of bubblewrap under the splitter to insulate it. Do not touch the chassis while running.
.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Thu Feb 14, 2008 8:33 pm Post subject: Re: Got the Marquee... |
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| comm wrote: | | Well I was the one that got the 9501LC in Rock Island on govliq recently. I put in a bid for what I thought it would be worth in parts, thinking that it was under what it would probably go for. I was shocked when I won it (for my max bid of course) and wondered what I had gotten myself into… I hope that there are not any hard feelings if I outbid anyone or maybe I saved you from a mess, not sure.David |
sounds like you definitely saved us from a mess, thank you  I would try one ofthose $250. E-bay lugs and get ot going though, what would put you around $1500. + freigth which ain't bad (assuming you don't have deeper issues).
Don't forget the LUG tubes need a small mod to the VNB.
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Fri Feb 15, 2008 2:53 am Post subject: |
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I've got a pretty nice condition blue LUG available. Its wear is almost impossible to see with the naked eye, and blue is the color that your eye is least sensitive to variations in. I think it'd be your best tube of the three, probably.
PM me if you want it.
Guys, we ARE talking about a 9500 here. LC machine. There's no front glass like on an 8" tube.
CJ
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Fri Feb 15, 2008 4:33 am Post subject: Re: Got the Marquee... |
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| comm wrote: | | Well I was the one that got the 9501LC in Rock Island on govliq recently. |
So he shows his face... 
hehe,j/k good luck with it man.
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comm
Joined: 09 Mar 2006
Posts: 46
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| Posted: Fri Feb 15, 2008 6:34 am Post subject: |
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Heh, yeah I finally showed my face. 
Thanks for the help everyone, glad to know I can at least test it out without dumping more money into a new tube. Hopefully I can try it out this weekend once I find some alcohol to clean the glycol off. I'll let everyone know how it goes.
David
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