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TheVerge
Joined: 19 Jul 2009
Posts: 928
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| Posted: Tue Nov 09, 2010 2:57 pm Post subject: How long can the raster be off the tube face |
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How long can the raster be off the tube face before it overheats and implodes. When i first turn on my NEC PG, all three tubes light up with a wicked, spider web looking raster and one corner goes off the tube face on all 3 tubes. I wonder how long i can leave it like this before it does damage as it takes time to shift it back normally.
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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 Nov 09, 2010 3:07 pm Post subject: |
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If it's blank raster, then for a long time. An all white 100IRE image, not long at all.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Tue Nov 09, 2010 8:18 pm Post subject: |
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Can't comment on NEC's but i've seen Marquee 8 inchers with the raster actually burned and wrapping around the face of the tube.
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TheVerge
Joined: 19 Jul 2009
Posts: 928
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| Posted: Tue Nov 09, 2010 9:12 pm Post subject: |
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I'll try and center it tonight i guess, if it implodes, to the trash she goes !!!
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Nov 10, 2010 3:08 am Post subject: |
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If its trash to you, its tresure to me. Dont throw it out!!
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CZ Eddie
Joined: 23 Mar 2006
Posts: 1601
Location: Austin, TX
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| Posted: Wed Nov 10, 2010 4:26 am Post subject: |
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| draganm wrote: | | Can't comment on NEC's but i've seen Marquee 8 inchers with the raster actually burned and wrapping around the face of the tube. |
What, really? So the tube wear was so large that you could see it run right off the sides of the tube face?
_________________
Back after a digital sabatical.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Nov 10, 2010 11:12 pm Post subject: |
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| CZ Eddie wrote: | | What, really? So the tube wear was so large that you could see it run right off the sides of the tube face? |
no not so large but totally off center like whoever set it up had no clue. I should have saved that tube for show-n-tell but it was many, many years ago.
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virusc
Joined: 11 Apr 2007
Posts: 358
Location: Massachusetts
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| Posted: Thu Nov 11, 2010 2:38 pm Post subject: |
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Maybe Curt can confirm this but I think the type of tube itself makes the biggest difference. Some of the older 07ms and small tubes like that seem to be hard to crack even with full white at high contrast over tube face for long periods of time.
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