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mx83toy
Joined: 14 Dec 2012
Posts: 322
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| Posted: Mon Jul 01, 2013 2:56 am Post subject: |
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Garyfritz you avatar is just asking for trouble there tell him to stop immediately!
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Thu Jul 04, 2013 10:25 pm 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! |
I just ordered one Curt. I got my eBay bonus bucks today so I figured I'd spend it on a UV LED flashlight. Can't wait to try it.
craigr
_________________
JETI 1501-HiRes 2nm Spectroradiometer
JETI 1211 Spectroradiometer
Photo Research PR-650 Spectroradiometer
Klein K10-A Colorimeter
Murideo Fresco SIX-G HDMI 2.x Multimedia Generator
Murideo Fresco SIX-A HDMI 2.x Analyzer
Light Illusion ColourSpace XPT Color Calibration Software
Light Illusion LightSpace XPT Pro Version 10.x Color Calibration Software
OMARDRIS JVC Software Patch to use K10-A and Jeti with JVC OEM AutoCal Software!
Sencore CR7000 CRT Tube Analyzer / Rejuvenater
Authorized Dealer for Lumagen & just about everything worth buying 
www.CIR-Engineering.com - craigr@cir-engineering.com
Phone: 865-405-6892
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jul 04, 2013 11:39 pm Post subject: |
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I have $22 ebay bucks and don't know what to blow it on, no good parts or repair electronics on ebay for that price at the moment 
_________________
When I'm asking for a Model number, that doesn't mean I'm asking for a nude photo with your number on it
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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 Jul 05, 2013 12:06 am Post subject: |
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Umm, call me stupid, but what the hell are eBay bonus bucks???
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Fri Jul 05, 2013 12:32 am Post subject: |
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| Curt Palme wrote: | | Umm, call me stupid, but what the hell are eBay bonus bucks??? |
My guess he has a eBay carid it card that gives rewards(bonus bucks=rewards)
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crt king of black
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Fri Jul 05, 2013 2:36 pm Post subject: |
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Yeah, a lot of people don't know what eBay bucks are. A couple years ago eBay invited me to join the program. Basically I get 1% eBay bucks back on almost every purchase I make on eBay. There are no fees or catches and it's totally free. eBay just gives me 1% on everything I buy. The only sorta catch is that you have just a few weeks (or maybe a month) to use the credit. But you can use eBay bucks towards any purchase on eBay.
craigr
_________________
JETI 1501-HiRes 2nm Spectroradiometer
JETI 1211 Spectroradiometer
Photo Research PR-650 Spectroradiometer
Klein K10-A Colorimeter
Murideo Fresco SIX-G HDMI 2.x Multimedia Generator
Murideo Fresco SIX-A HDMI 2.x Analyzer
Light Illusion ColourSpace XPT Color Calibration Software
Light Illusion LightSpace XPT Pro Version 10.x Color Calibration Software
OMARDRIS JVC Software Patch to use K10-A and Jeti with JVC OEM AutoCal Software!
Sencore CR7000 CRT Tube Analyzer / Rejuvenater
Authorized Dealer for Lumagen & just about everything worth buying
www.CIR-Engineering.com - craigr@cir-engineering.com
Phone: 865-405-6892
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Wed Jul 10, 2013 9:47 am Post subject: |
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Hi,
I've built an UV-Tester from an old EPROM eraser and a new 4W blacklight tube.
My experiences are as follows:
- Excellent for determing the wear on blue tubes. Even the slightest patterns will be prefectly visible.
- Still OK on bare green tubes or those with clear C Elements. Less reaction, so seeing patterns is harder.
- Very difficult on green tubes with green C Elements. The C Element absorbs a lot of the intensity.
- Very difficult on bare red tubes or those with clear C Elements. Almost no reaction and nothing to see.
- Impossible on red tubes with red C Element. The filtering seems to absorb everything.
Still a handy tool! Thanks for the idea!
Regards,
barclay66
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joatmon
Joined: 17 Mar 2009
Posts: 127
Location: Ottawa, Ontario
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| Posted: Fri Jul 26, 2013 2:47 pm Post subject: |
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| barclay66 wrote: | I've built an UV-Tester from an old EPROM eraser and a new 4W blacklight tube.
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I tried to look for wear on the tubes in a PG6+ with my old EPROM eraser (in total darkness, lenses off), and I couldn't make out any pattern. Is this is a good thing or am I missing something? I can't see wear with a normal LED flashlight.
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Fri Jul 26, 2013 5:24 pm Post subject: |
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Hi,
When I first tried with the unmodified device I couldn't see any reaction on the tube faces. Therefore I replaced the UV tube with a black light version of the same size. Now it isn't an EPROM eraser anymore but a black light lamp in an unusual case...
Regards,
barclay66
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