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Arctic Dweller
Joined: 31 Oct 2009
Posts: 13
Location: CANADA
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| Posted: Fri Nov 06, 2009 4:41 am Post subject: How To Repair A Broken Pin On a CRT Tube |
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I was swapping out Neck Boards between the Green and Blue tubes on my SONY G70 to determine if the Green CRT tube was faulty. (the Bias control would not function on the Green tube) In the process, a pin came off the Blue CRT tube that was critical to the Blue tube's performance.
I investigated using a Silver-based epoxy to "glue" the pin back. However, the technician I spoke with from the Silver Epoxy manufacturer advised it would not be strong enough, nor hold it under the temperature conditions of a CRT tube.
I then decided I had nothing to lose and decided to try and solder the broken pin back together. The pin had separated fairly deeply down into the hole of the plastic end and glass end of the tube.
The bottom-line is that the repair worked perfectly the first time!
I have attached an MSWord file with the Procedures as well as a Diagram (the details were too small to properly photograph).
Hopefully, none of you ever have to try this procedure but, if you do, here's how it worked.
God Bless, John
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Download |
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CRT Pin Repair.doc |
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33.5 KB |
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603 Time(s) |
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Fri Nov 06, 2009 10:39 pm Post subject: |
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That's pretty impressive John.
Kal should add this to the procedures.
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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 Nov 06, 2009 11:17 pm Post subject: |
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Yes he should. Congrats, I've never done that!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Sat Nov 07, 2009 2:05 am Post subject: |
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Nicely done 
Just be very careful if you have to pull the neck board off again. I suspect that the solder may hold up better under compression than under tension  But I suppose if the pin comes out again you can just resolder it again too.
craigr
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Arctic Dweller
Joined: 31 Oct 2009
Posts: 13
Location: CANADA
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| Posted: Sat Nov 07, 2009 3:02 am Post subject: |
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Thanks guys for your kind remarks.... I am humbled by your words.
God Bless, John.
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Sun Nov 08, 2009 5:51 pm Post subject: |
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John wrote:
> I have attached an MSWord file... <
Apparently, I'm the only one not seeing this attachment?
_________________
- Tim
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Arctic Dweller
Joined: 31 Oct 2009
Posts: 13
Location: CANADA
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| Posted: Sun Nov 08, 2009 11:00 pm Post subject: |
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Hi Tim:
In the first posting of this subject, there is a "boxed area" with the heading: "CRT Pin Repair.doc"
At the bottom right-hand side of this boxed area you should be able to see a symbol of a paper clip with the word "Download" in blue font.
Click on the word "Download" and you should be able to retrieve the Procedures and Diagram.
It has been downloaded 102 times, thus far, so the download function is working.
God Bless, John.
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VideoGrabber
Joined: 09 Apr 2006
Posts: 933
Location: Michigan
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| Posted: Mon Nov 09, 2009 12:22 am Post subject: |
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John,
thanks a lot. I see it now (and was able to download the doc), but there was no trace of the box there when I initially posted. Honest!
I have no clue why that would be the case, but since it's working now, I guess it's a moot point.
_________________
- Tim
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