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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Thu Nov 29, 2007 11:00 pm Post subject: The patient is in recovery but is mighty swollen. |
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Thanks to the generosity of a forum member I've got some non-toasty B/G tubes to put in my 808s. Now that I've got the HT room mostly cleared out and the PJ sitting on the floor, it's time to do the deed.
I've got the instructions all printed out, but I'd like to solicit general advice - and have one specific question: Can the on-tube electronic settings be done while looking at the tube face rather than the screen? Setting everything up and focusing with the basics wrong seems like a losing proposition.
Thanks for any advice!
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Last edited by perisoft on Wed Dec 05, 2007 1:16 am; edited 3 times in total
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Zebu Fellenz
Joined: 21 Dec 2006
Posts: 2567
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| Posted: Thu Nov 29, 2007 11:44 pm Post subject: |
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If you are talking about things like raster centering then yes do it with the lenses off
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Thu Nov 29, 2007 11:59 pm Post subject: |
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That I know, I'm talking about the magnetic adjustments on the tube neck for astig, etc.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Fri Nov 30, 2007 1:02 am Post subject: Re: So, I'm biting the bullet and swapping tubes in my 808s. |
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| perisoft wrote: | | I've got some non-toasty B/G tubes to put in my 808s. Now that I've got the HT room mostly cleared out and the PJ sitting on the floor, it's time to do the deed.Thanks for any advice! |
about frickin time.  you should be able set just about everything with the PJ on a bench but I find it's easier on my eyes to do it on a screen as opposed to staring at a tube face.
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Fri Nov 30, 2007 3:09 am Post subject: Re: So, I'm biting the bullet and swapping tubes in my 808s. |
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| draganm wrote: | | perisoft wrote: | | I've got some non-toasty B/G tubes to put in my 808s. Now that I've got the HT room mostly cleared out and the PJ sitting on the floor, it's time to do the deed.Thanks for any advice! |
about frickin time. you should be able set just about everything with the PJ on a bench but I find it's easier on my eyes to do it on a screen as opposed to staring at a tube face. |
Oh, jeez.  I haven't even been using the Barco for months; it's been waiting while I run the 1271 upstairs. My HT room has been jammed with my parents' stuff and I only just got it cleared out.
Another quick question - how do I tell whether the tubes in my Barco have low EM, or whatever it is that causes them to be dim without burn? (I'm still not very well-versed in that.) I've got two reds, a green, and a blue that are new (to me). None have much wear; the reds are 9/10, the blue is a 7, the green has a bit - about a 6.5 or 7. My green is a 5 at best. However, the originator of the tubes says his green and one red have 15k on it and won't meet the brightness spec.
So, I have a definite good red and blue with only about 4k on the clock, my 5/10 green with 9k (barco 9k, not tube hours but the way it was used probably really 9k), my red which looks fine but has 9k, and a 7/10 green which will be dimmer.
Will I be better off switching all three, should I switch the R/B to the 4k hour ones but leave the green on the assumption that my green is brighter even with the wear (it doesn't seem to discolor much and I can even it out with an overlay in software) or can I test to see whether the light output of the tubes that are already in is up to snuff or assume it's not due to hours?
Quick, give me an answer! 
David.
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Fri Nov 30, 2007 5:09 am Post subject: |
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OK, having spoken with the anonymous donor, 'DEEP TUBE', I have come to a conclusion about the swap. Therefore, I present the old and the new! I am a happy man!
(These shots were all taken with the same settings on the camera, with flash, so the differences between are representative and the quality as shown is pretty accurate).
(In case you're wondering: Yes. I am crazy.)
I have also found that I need to clean my lens.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Nov 30, 2007 5:24 am Post subject: |
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| perisoft wrote: |
I have also found that I need to clean my lens. |
At least you're quiet about it.
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Tech support for nothing
CRT.
HD done right!
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Mon Dec 03, 2007 3:53 am Post subject: |
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It worked! By god in heaven it worked! All three tubes at once, about three hours to do the job, fired it up, and WHAM, baby, WHAM! Three gorgeous tubes! They were even mostly in focus already...
WOOT WOOT WOOT!
I feel like those kids in Africa who have to go out and kill a wildebeest on their own must feel when they come back to the village dragging the carcass. I AM A MAN! 
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Mon Dec 03, 2007 4:04 am Post subject: |
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Sweet! Just don't try to butcher that wildebeest while it's turned on, or you'll get a whole NEW feeling!
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Mon Dec 03, 2007 4:29 am Post subject: |
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well the "new' ones ain't exactly pretty but it's a step in the right direction. What counts is the experience you've gained, now if you do get some really nice tubes you won't have to gamble with them.
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Mon Dec 03, 2007 4:31 am Post subject: |
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OK, a quick run through and I've got a couple of things I'm wondering about.
First, even with the focus units pulled all the way back (away from the tube faces) I have to set midpoint focusing to around 100 to get them focused, and even that's not perfect.
Second, the green tube's raster pops up far sooner than the others when brightness is turned up, and seems a bit flickery.
Third, the green and blue tubes show a big streak across horizontally where there are, say, lines of text on a white background. This did *not* occur before and happens regardless of the contrast or brightness setting. It didn't happen before - before, when contrast was set over about 70, there would be some 'bloom' to the right with bright areas. This is the opposite and is more of a smudge at any contrast level.
Presumably for the focus I need to move the focus block back, but it's being stopped by the neckboard support unit. I don't have a lot of leeway there, because if THAT moves back, the neckboard starts to come off the end of the tube. This also, presumably, means I'm doing something wrong. Any advice?
Still... I didn't done blow sh*t up. Woohoo!
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Mon Dec 03, 2007 5:03 am Post subject: |
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| draganm wrote: | | well the "new' ones ain't exactly pretty but it's a step in the right direction. What counts is the experience you've gained, now if you do get some really nice tubes you won't have to gamble with them. |
Man, you're hard to please. However, I'm setting up an HT on a budget of about $700 - that includes the PJ, tubes, curtains, lighting, carpeting, audio, HTPC. I do this through ingenuity and hard work. The price I pay is imperfect tubes, because I put the vast majority of my money back into my business, and most of the rest back into my family, where it belongs.
Despite my evident frustration, I do like you.
But: I get it. My tubes aren't perfect. Fine. We all know. Everyone on the A-site knows, and everyone here knows. I'm going to put a "My other car is a Barco Graphics 808s with lousy tubes" bumper sticker on my Mercury so everybody in TOWN knows too. If my computers still had tubes, they'd be burned. The tubes carrying water to my house would be burned, but they have water in them. The tubes through which the smoke from my stove travels are also, most definitely, burned. There are many tubes in my life; many of them are burned, charred, singed, discolored, or otherwise imperfect, and none of them, I imagine, approach the pristine tubiness of the tubes in the areas in which your tubes are kept. However, it is as it is, and my lot is currently one of, shall we say, imperfect tubality.
Years from now, though, when my business has prospered and my children grown strong, and I can afford the best tubes money can buy, you will have succumbed to the high blood pressure brought on by looking at pictures of all my burned tubes. And I will take the worst one, the very first on which you commented those dusty years past, and leave it on your tomb as a mark of honor.
If that will be all regarding my TUBES, I would appreciate any advice about how to set up the ones I have, as you clearly know your sh*t.
Thank you.
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loribates
Joined: 02 Dec 2007
Posts: 185
Location: KS
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| Posted: Mon Dec 03, 2007 6:08 am Post subject: |
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Persecution complex? Gotta say it.... I agree, you've made a step in the right direction. Those new ones aren't perfect, but for dang sure better than what you had. Did you actually watch it with those old tubes? The ones on my other Marquee weren't as bad as your old ones, but I couldn't stand to even fire it up and see that nasty brown all over the screen....
Oh by the way..... did anyone mention those tubes were toast?? 
Anywhoo.... I sure hope you get some help here. My comments are useless other than it appeared you needed to be razzed. Good luck!
PS - very much understand your trying to do this on a budget.... same here. Keep at it.... you'll end up with something you'll really enjoy. 
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Lori Bates
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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Fujifrontier
Joined: 20 Oct 2007
Posts: 354
Location: San Antonio, Texas
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| Posted: Tue Dec 04, 2007 2:20 pm Post subject: |
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So, would anyone feel bad about driving toasty tubes to the limit? Or would we be more worried about popping something in the PJ?
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Wed Dec 05, 2007 1:18 am Post subject: |
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OK. I was totally unable to get any kind of reasonable green focus. I blamed astig, kept messing around, pulled out my hair.
Then I'm taking another look.. @#@# HV splitter was blocking the green focus block. Nudged it past and voila - tarp as a shack.
Astig is still not good but with a temporary screen I can fix that now, it was just impossible to see on the tube face.
So, that's all good.
BUT, as Deep Tube said, low EM on that tube and it's dimmer than a dim thing. I'd like to keep it in if I can as the wear is lower than my other one, but unless there's some way to beat the snot out of it to get it brighter it looks like I've got another evening ahead of me...
(The irony is that I went from a PJ that was pink to a PJ that's purple. Great... Knew it could be a problem but decided to give it a shot anyway,... if I can pound that tube I'll just use it until it gets toasty and then swap back to the other green.)
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