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joatmon
Joined: 17 Mar 2009
Posts: 127
Location: Ottawa, Ontario
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| Posted: Wed Nov 30, 2011 3:20 pm Post subject: When does visible tube wear show up? |
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We've been enjoying our Runco/Barco 708 for about 2 years now. It had 1,350 hours on the clock when we got it and I couldn't see any wear on the tube faces then. Fast forward 2 years and it now has 2,442 hours on it and I still can't make out the slightest wear on the tube faces (I'm using a bright LED flashlight and looking through the lens). When does it become something that you can visually see? I've got the brightness set at 60 (100% light controlled room, 84" screen).
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Nov 30, 2011 7:31 pm Post subject: |
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When you remove the lenses first....
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Wed Nov 30, 2011 11:18 pm Post subject: |
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"When does it become something that you can visually see?"
When it's something you can visually see 
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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zaphod
Joined: 16 Jun 2006
Posts: 2002
Location: Cloverdale
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| Posted: Wed Nov 30, 2011 11:39 pm Post subject: |
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about 6 months after the latest release of the LoTR trilogy...
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walk gently. leave a good impression.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Wed Nov 30, 2011 11:42 pm Post subject: |
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It really depends on the level of contrast that you use. If that level is say at about 50% then it may be many thousands of hours before you see any tube wear higher contrast levels produce tube wear faster.
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AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
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| Posted: Thu Dec 01, 2011 12:28 am Post subject: Re: When does visible tube wear show up? |
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| joatmon wrote: | | Fast forward 2 years and it now has 2,442 hours on it and I still can't make out the slightest wear on the tube faces (I'm using a bright LED flashlight and looking through the lens). When does it become something that you can visually see? I've got the brightness set at 60 (100% light controlled room, 84" screen).. |
I was at ~2800 hrs when I first noticed very faint wear on my green tube running modest contrast (lower than factory default).
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A Rogers
Joined: 14 Feb 2011
Posts: 133
Location: Toronto On
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| Posted: Thu Dec 01, 2011 12:33 am Post subject: |
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with my Barco(Runco) 708 I couldn't see any wear at the 2000 hour mark looking through the lenses with a bright LED flashlight. However once I took off the lenses I could easily see the wear, it was also very noticeable if I projection with the image expanded over the virgin phosphor.
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joatmon
Joined: 17 Mar 2009
Posts: 127
Location: Ottawa, Ontario
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| Posted: Thu Dec 01, 2011 3:50 pm Post subject: |
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| stefuel wrote: | "When does it become something that you can visually see?"
When it's something you can visually see |
 OK, that was my favourite reply.... LOL.
I'll take the lenses off and have a better look (just out of curiosity!)
It may not be the sharpest PJ out of most, but it sure is still fun for viewing!
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