[TechAssist] Re: toshiba cf27h50 shadow mask

Thanks for your suggestion, I agree with you, I ithink the shadow mask is 
damaged... Jerry H.




In a message dated 12/30/01 3:42:04 PM US Mountain Standard Time, 
gulftech@xxxxxxxx writes:


> To the originator of this message,
> 
> Manual degaussing of the CRT is such a common thing that many of us who
> have been doing it for thirty years it's a natural process like
> breathing.  We forget the technique is a learned process like anything
> else.
> 
> While there is no "only one way to do it," here is what I do.  With the
> TV on, locate the degauss coil parallel to the screen and turn on power
> to the coil.  (Some cheapies don't have a switch.  If so, plug in the
> coil)  Move the coil in a circular motion over the face of the CRT for
> maybe 10-20 seconds.  Gradually move the coil away from the CRT to a
> distance of at least 4 feet.  Turn the coil perpendicular to the face of
> the CRT and turn off or remove power from coil.  This step is important
> so that the collapsing magnetic field not re-magnetize the CRT.
> 
> From the previous discussion, I strongly believe the shadow mask is
> damaged and no repair is possible.
> 
> To the tech who suggested using a solder gun to degauss a CRT.  Sounds
> good.  Just one thing.  Some of us no longer even own one anymore!   Used
> to buy the Weller 440 at about $15.  Last I heard, a FAR less quality
> product was about $100.  About as rarely used as a Simpson 260 now.  I
> have used (in a pinch) a ladies hair dryer to degauss a CRT.  (No
> heat--just using the magnetic field from the motor.)
> 
> Hope this helps,
> 
> 
> Ken Smith
> Gulf Technical Services
> 3034 Gulf Breeze Parkway
> Gulf Breeze, FL  32561
> 850-934-8324 (Voice) 850-932-0819 (Fax)
> 
> ------------------------
> 
> 
> On Sun, 30 Dec 2001 09:26:44 -0500 "Jeff Dougherty"
> <jeff@xxxxxxxxxxxxxxxxxx> writes:
> > 
> > [You know our name...what's yours?]
> > You didn't forget to gradually move the coil away from the set, did 
> > you?
> > Start at a distance of 6 ft, or so, move close, then move about 6ft 
> > from the
> > set, unplug the coil.
> > 
> > Jeff
> > HAPPY HOLIDAYS:PEACE ON EARTH
> > mailto:Jeff@xxxxxxxxxxxxxxxxxx  www.9-11-2001tragedy.com
> > FAX 1-413-280-0677
> > Intrepid Video & Electronics
> > Harrisburg, PA 17111
> > 717-909-8844
> > www.intrepid-video.com www.tech-repair.net www.thetoolcaddy.com
> > ----- Original Message -----
> > From: <knitrngr65@xxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, December 29, 2001 9:53 PM
> > Subject: [TechAssist] Re: toshiba cf27h50 shadow mask
> > 
> > 
> > > Bill,
> > >
> > > I like your experiment, but it didn't work.  When I degauss the 
> > unit with
> > the
> > > handheld degaussing ring, the screwed up colors never dissappear.  
> > Do you
> > > have any other ideas, I sure would appreciare your input.....
> > >
> > >
> > >
> > > In a message dated 12/29/01 11:51:08 AM US Mountain Standard Time,
> > > billmcfarland@xxxxxxxxxxxxxx writes:
> > >
> > >
> > > > OK, This is what I do.  It may be wrong...But it was how I was 
> > taught.
> > > >
> > > > Start with unit in a Cold Start State.
> > > >
> > > > Step 1 With Unit off--Disconnect the internal Degauss coil. Turn 
> > unit
> > on.
> > > > Step 2 Degauss using your handheld coil.
> > > > Step 3 Let the unit warm up 15 or 20 min.
> > > > Step 4 Turn off unit and let sit off for about 10 min. DO NOT  
> > MOVE THE
> > > > UNIT.
> > > > Step 5 Turn unit back on.
> > > >
> > > > If the Purity problem comes back during the warm up or when you 
> > turn it
> > on
> > > > the second time. The Shadow Mask is loose.
> > > > Its also important not to move the unit after you degauss with 
> > the
> > handheld
> > > > coil. The earths magnetic field can mess with the experiment.
> > > >
> > > > Like I said. This could be completely off base. But It works for 
> > me.
> > (Has
> > > > far as I know anyway!)
> > > > I am sure there are people on this list who have a better way or 
> > know
> > more
> > > > about it then I.
> > > > Just thought I would Run this up the flag pole and see anyone 
> > salutes!
> > > >
> > > > Good luck, God Bless, Happy Holidays
> > > > Bill McFarland
> > > > DMC Electronics
> > > > ----- Original Message -----
> > > > From: <knitrngr65@xxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Friday, December 28, 2001 4:18 PM
> > > > Subject: [TechAssist] toshiba cf27h50 shadow mask
> > > >
> > > >
> > > > > Maybe someone can tell me, how to determine if the shadow mask 
> > has
> > broken
> > > > > loose.  I tried the only way I know, and that is if you have a
> > discolored
> > > > > screen ( blue, purple weird colors), and the colors don't go 
> > away
> > after
> > > > > degaussing.  Also I tried tapping on the front of the screen 
> > to see
> > some
> > > > kind
> > > > > of movement in the shadow mask, didn't help.  Can someone give 
> > me some
> > > > > advice, sure would appreciate it....
> > > > >
> > > > >
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