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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: Fri Jun 28, 2013 11:11 pm Post subject: Best tube wear detector..ever! |
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Here's a discovery that I made by fluke a couple of minutes ago.
I have a pile of 9" tubes that are used, and in very good shape. I wanted to throw my best tube into a 1209s I'm working on, and had three tubes in LC chambers that I couldn't detect any wear on.
I recently purchased an Ultraviolet LED flashlight on eBay that detects pet urine to see how it worked (I saw my local carpet cleaner guy use one, so I bought one on impulse on eBay last week for $13.)
So, for fun, I wondered if that light might react with phosphor, and sure enough, I found one tube that looked perfect to the eye, but showed a small area wear pattern on one of the tubes, and it was easy to find the tube that had almost no wear via that flashlight.
So, if you deal with a fair number of tubes like I do, or regularly upgrade CRT projectors via Craigslist, a $13-15 investment might pay off quickly. I'm buying another UV flashlight to keep on the bench!
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Fri Jun 28, 2013 11:38 pm Post subject: |
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That's great to know curt I may pick me up sometime to check the tubes on any used projector I get or any spare tubes that I find questionable if the seller doesn't provide tube pics
I have been using a hid spotlight to check the wear on tubes lately(I know its crazy bright)
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crt king of black
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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: Sat Jun 29, 2013 1:38 am Post subject: |
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No question that LED flashlights are better than incandescent, but the ultraviolet showed the wear right through the C element and glycol.
I challenge anyone to try it. 
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 29, 2013 2:01 am Post subject: |
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Have you tried using a fluro black light?
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Jun 29, 2013 3:16 am Post subject: Re: Best tube wear detector..ever! |
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| Curt Palme wrote: | Here's a discovery that I made by fluke a couple of minutes ago.
I have a pile of 9" tubes that are used, and in very good shape. I wanted to throw my best tube into a 1209s I'm working on, and had three tubes in LC chambers that I couldn't detect any wear on.
I recently purchased an Ultraviolet LED flashlight on eBay that detects pet urine to see how it worked (I saw my local carpet cleaner guy use one, so I bought one on impulse on eBay last week for $13.)
So, for fun, I wondered if that light might react with phosphor, and sure enough, I found one tube that looked perfect to the eye, but showed a small area wear pattern on one of the tubes, and it was easy to find the tube that had almost no wear via that flashlight.
So, if you deal with a fair number of tubes like I do, or regularly upgrade CRT projectors via Craigslist, a $13-15 investment might pay off quickly. I'm buying another UV flashlight to keep on the bench! |
funny enough there aren`t any phosphors to look at.
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1 answer always poses multiple questions.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 29, 2013 3:21 am Post subject: |
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Are your tubes that worn?
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Jun 29, 2013 3:23 am Post subject: |
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you obviously don`t get it
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 29, 2013 4:23 am Post subject: |
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| dvh99 wrote: | | you obviously don`t get it |
Nope, ive got no idea what you mean 
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Jun 29, 2013 4:45 am Post subject: Re: Best tube wear detector..ever! |
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| dvh99 wrote: | | Curt Palme wrote: | Here's a discovery that I made by fluke a couple of minutes ago.
I have a pile of 9" tubes that are used, and in very good shape. I wanted to throw my best tube into a 1209s I'm working on, and had three tubes in LC chambers that I couldn't detect any wear on.
I recently purchased an Ultraviolet LED flashlight on eBay that detects pet urine to see how it worked (I saw my local carpet cleaner guy use one, so I bought one on impulse on eBay last week for $13.)
So, for fun, I wondered if that light might react with phosphor, and sure enough, I found one tube that looked perfect to the eye, but showed a small area wear pattern on one of the tubes, and it was easy to find the tube that had almost no wear via that flashlight.
So, if you deal with a fair number of tubes like I do, or regularly upgrade CRT projectors via Craigslist, a $13-15 investment might pay off quickly. I'm buying another UV flashlight to keep on the bench! |
funny enough there aren`t any phosphors to look at. |
funny
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crt king of black
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Jun 29, 2013 10:15 am Post subject: |
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the tubes dont contain phosphor but still they are called this way, i find this rather funny.
only the green monochrome monitors had phosphor in them.
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fuchs
Joined: 27 Jun 2012
Posts: 153
Location: the NL
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| Posted: Sat Jun 29, 2013 10:35 am Post subject: |
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hehe. That is a neat discovery
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NEC plain 9PG
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sat Jun 29, 2013 12:28 pm Post subject: |
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What is it that glows when struck by the electron beam?
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Jun 29, 2013 7:38 pm Post subject: |
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yttrium gallium indium zinc-sulfide etcetera
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sat Jun 29, 2013 8:17 pm Post subject: |
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| dvh99 wrote: | | yttrium gallium indium zinc-sulfide etcetera |
Ok I have always known it as phosipher but that is a mouth full to say
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crt king of black
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SisterOfMercy
Joined: 31 Oct 2007
Posts: 155
Location: Zwart Nazareth, The Netherlands
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| Posted: Sat Jun 29, 2013 10:52 pm Post subject: Re: Best tube wear detector..ever! |
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| Curt Palme wrote: | | I recently purchased an Ultraviolet LED flashlight on eBay that detects pet urine to see how it worked (I saw my local carpet cleaner guy use one, so I bought one on impulse on eBay last week for $13.) |
Does it also work with c-u-m stains? If so, you can now see who's had a go with your PJ! 
edited because of stupid filter 
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The kissing and the colour come crashing down
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sun Jun 30, 2013 6:05 am Post subject: Re: Best tube wear detector..ever! |
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| SisterOfMercy wrote: | | Curt Palme wrote: | | I recently purchased an Ultraviolet LED flashlight on eBay that detects pet urine to see how it worked (I saw my local carpet cleaner guy use one, so I bought one on impulse on eBay last week for $13.) |
Does it also work with c-u-m stains? If so, you can now see who's had a go with your PJ!
edited because of stupid filter |
I noticed  filters suck when you don't want them to block what you type  they are evil  I am leaving it at that
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crt king of black
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Sun Jun 30, 2013 2:16 pm Post subject: |
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| dvh99 wrote: | the tubes dont contain phosphor but still they are called this way, i find this rather funny.
only the green monochrome monitors had phosphor in them. |
Where are you getting your information from?
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Sun Jun 30, 2013 3:54 pm Post subject: |
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| macgyver655 wrote: | | dvh99 wrote: | the tubes dont contain phosphor but still they are called this way, i find this rather funny.
only the green monochrome monitors had phosphor in them. |
Where are you getting your information from? |
That's what I want to know
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crt king of black
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mc86
Joined: 20 Sep 2008
Posts: 767
Location: pittsburgh, pa
TV/Projector: ECP 4500 (Vidikron box), ECP4500+, wanting 07MS/07MTS, evaluating pc soft-blend
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| Posted: Sun Jun 30, 2013 5:16 pm Post subject: |
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Here is a list of salts used in various "phosphors" that I thought I downloaded from another thread here, but couldn't find via search quickly. I've never been able to find much on the binders, solvents, etc. and that's what I'd like to see.
Matt
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Sun Jun 30, 2013 11:46 pm Post subject: |
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According to dictionary.com, a "phosphor" is "any of a number of substances that exhibit luminescence when struck by light of certain wavelengths, as by ultraviolet." It doesn't have to be phosphorus-based.
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