[TechAssist] Re: ShadmaskSolderGunDegauss

Thanks for the advice.....



In a message dated 12/30/01 10:23:25 AM US Mountain Standard Time, 
kc4iai@xxxxxxxxxxx writes:


> ///  Your solder gun is a current transformer with a massive primary, single 
> 
> turn secondary. Disconnect the tip if burning it up troubles you. Trigger 
> the gun, move it in, and attempt to degauss a small area of the screen. 
> Turn 
> the gun so the coil is parallel to the mask. (Hey, you would have tried 
> that 
> but non techs do get to read this forum.)
> 
> If you are unable to degauss a small area or if the purity problem returns 
> to the degaussed area you can suspect the shadow mask problem.
> 
> I have never used this in very large screens. I used it in monitor size 
> tubes (up to 21 inch), even those with lightening damage. In one case a 
> massive speaker magnet had been stored on top of a composite montior that 
> would not self degauss.
> 
> A massive magnetism problem will result in all one color or absence of most 
> 
> color over a large part of the screen.
> 
> 
> 
> >From: knitrngr65@xxxxxxx
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: techassist@xxxxxxxxxxxxx
> >Subject: [TechAssist] Toshiba Tac9815 Shadow mask problem
> >Date: Sat, 29 Dec 2001 12:21:09 EST
> >
> >Hello,
> >I'm trying to determine if this unit has a shadow mask problem can anyone
> >give me some idea's that I has not been tried.  This is what I've tried so
> >far, degaussing, tapping front of tube, made sure thyresistor is getting
> >warm, ohmed degauss coil, it has continuity, checked for broken traces.  
> >Any
> >help would be greatly appreciated...
> >
> >
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