[time-nuts] time-nuts Digest, Vol 69, Issue 31

J. Forster jfor at quik.com
Wed Apr 14 12:52:37 EDT 2010


Some color CRTs have "purity" magnets. Is it possible those shifted in the
H field?

-John

================


> Bob Camp wrote:
>> Hi
>>
>> I've found that in some cases you need to run multiple passes over
>> multiple
>> days to degauss a badly mag'd monitor. I'm sure that at some point they
>> do
>> indeed become "irreversible". So far I haven't found one that a hula
>> hoop
>> sized coil won't eventually fix.
>>
>> Bob
> Sadly, I have.  I used a large degaussing coil that could be passed over
> the
> entire monitor, a smaller bulk tape demagnetizer, and the internal
> degaussing
> coil.  I could never get rid of the rainbow fringe around the outside of
> the
> CRT.
>
> -Chuck
>
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