[rescue] Sun 21" CRTs

Curtis H. Wilbar Jr. rescue at hawkmountain.net
Mon Jul 7 16:12:34 CDT 2008

Robert Darlington wrote:
> Hey, my NeXT color monitor does something similar.  It ticks or
> something, the picture jumps a little bit, and then it's fine again
> for a couple of minutes.   My guess is something is arcing over, but
> don't know enough about how these things are built to know for sure.
> Any ideas?   Also, is anybody getting rid of a good color NeXT monitor
> near New Mexico by chance? (can't hurt to ask!)

Mine gets very fuzzy...  doesn't jump at all... don't quite get it... as 
if it was
HV, I'd expect a change in size or more noise.... it was downright weird....

At a minimum something went awry with the focus voltage to the CRT I'd
imagine...  (but how that could make noise I don't know unless hv was 
to the focus ! (ouch)).

-- Curt

> Thanks,
> Bob
>> I have one of each... and the true flat had an issue recently where it made
>> a noise
>> and the screen went fuzzy, it self corrected, did it again, self corrected,
>> then did it
>> again, and wasn't correcting... so I turned it off and back on and it
>> corrected.
>> Then I think it did it one more time.  It hasn't done it since, and the
>> monitor is
>> crisp.. only thing is on the dark blue/purplish background when waking it
>> up,
>> I see some fine red lines running 30 degree 'uphill' from left to right on
>> the
>> background... but then the windows (mostly white) refresh, and then if I
>> switch
>> to an empty desktop I don't see it... so unsure what it is.
>> Are these notorious for failing ?  Should I be planning a retirement party
>> for it ?
>> (I surely wouldn't mind saving the power, but it is a damn nice CRT, so I'd
>> hate
>> to lose it).
>> -- Curt
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