Picture tube degaussing

Ron Weston · 2010-04-22T04:01:33+00:00

My friend has an inexpensive 9-inch TV, about 6 to 10 years old. Itsuddenly developed two green spots on the screen, one in the upperright corner and one in the lower right corner.I have a "GC Electronics Professional Degaussing Coil" and I made twoattempts to degauss the TV picture tube. After the second try thelower green spot was just about gone, and the upper spot is muchsmaller but can still be seen.I'm going to try again next week and I would like some advice. In myattempts so far I moved the degaussing coil around only the front ofthe TV. Should I try degaussing the sides, top or back of the TV, ormight this make things worse?Nothing unusual happened to cause the green spots. The TV hasn't beenmoved in years and no magnets were placed near the TV. Any theoriesabout what happened?

Apr 22, 2010 23 Replies

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Arfa Daily 16 years ago

Just another little bit of friendly advice Ron - don't top-post ! It's greatly frowned upon in newsgroups, and whilst it's reasonably tolerated on this group, doing it on some others will cause a shed-load of abuse to fall onto your head ...

Arfa

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Phil Allison 16 years ago

"Ron Weston"

** Now he tells us ......

Did he never guess that the failure of the degaussing circuit CAUSED the green patches to appear ??

..... Phil

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Meat Plow 16 years ago

I wonder how someone who would ask these question about degaussing determine the internal degauss wasn't working?

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stratus46 16 years ago

=A0the

I had a TV with a failed degaussing system which caused a serious color blotch as Phil described. This one failed because of a relay contact flexing the solder joint on the PCB which eventually failed. I removed all the old solder and re-soldered it. It went 8 years before the first failure.

G=B2

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