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

Chuck Harris cfharris at erols.com
Wed Apr 14 13:25:16 EDT 2010


Hi John,

It is always possible.  They were cheap monitors, so the obvious
solution was to trash them, and avoid putting monitors anywhere near
the shaker unit.

I do recall that the shaker made monitors swim from many many yards
away.  Some better shielding would have been nice.

-Chuck Harris

J. Forster wrote:
> 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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> 
> 
> 
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