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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Tue Sep 17, 2013 5:36 pm Post subject: What to expect from these 8" tubes? |
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So there are given a set of marquee tubes that had ran 13000hrs. in standby, and in 3300hrs. in normal mode, no visual wear on phosphor. The G2s are at around 60 on all tubes, the color balance is right, but how many hours should we expect from the tubes?
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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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: Tue Sep 17, 2013 6:29 pm Post subject: |
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Probably another 10K hours or so. the low G2 is the key. Emission with a good filament voltage tends not to die overnight on panasonic tubes. The Sony tubes in the BG808s are a different story, they can die within a week or two for no reason at 7000-12,000 hours.
I just retubed a barco 708 with 56,000 hours on the chassis. Those sets use the P16 tubes. Poor emisison, roasted phosphor, but there was still enough light to light up my screen.. but maybe at 300 lumens instead of the 1000 they are rated at.
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gnnash
Joined: 10 Jul 2013
Posts: 216
Location: Lake Elmo, MN
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| Posted: Tue Sep 17, 2013 6:43 pm Post subject: |
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56,000 hours!?! Was that one of those Nascar sim chassis?
That's well over 12 years of 12 hours a day 
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mx83toy
Joined: 14 Dec 2012
Posts: 322
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| Posted: Wed Sep 18, 2013 1:49 am Post subject: |
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holy crap 56000 is a lot!!!! would even expect the chassis to go that long let alone the p16's!!!
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Sep 18, 2013 3:03 am Post subject: |
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Ive got a VPH 1001 here with around 60,000 hours, tubes in it were black as charcol. Will show you the tubes when youre up if you remind me Peter.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Wed Sep 18, 2013 5:35 am Post subject: |
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Dang that's a lot of hours
I wonder if I will get that much from the set of p16's in my samsung tv(suckers already show some wear but not bad)if it even sees that much use
Also does anyone know how to reset the hour meter on the marquees(soon to be putting in mint 9inch tubes and want the hour meter to be exact)
FYI to the op my marquee has tubes like those with close to 3k hours and the green is showing slight wear the red and blue still look great(hadn't been setup right before I got it)
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crt king of black
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