🚀 go-pugleaf

Note that if the arc is external to the CRT, then the description below
does not apply. This may be due to a bad flyback or cracked HV wire insulation
or other place where the HV after the rectifier - going to the CRT - can arc
to a ground point.

--- sam : Sci.Electronics.Repair FAQ: http://www.paranoia.com/~filipg/REPAIR/

In article <markmtf-0601972321280001@cust10.max19.san-francisco2.ca.ms.uu.net> markmtf@earthlink.net writes:

   In article <32d29399.10034441@news.csra.net>, ajilight@csra.net (Andy
   Insalaco) wrote:

   > On 21 Dec 1996 09:27:52 +1100, cdewick@lios.apana.org.au (Craig
   > Dewick) wrote:
   > 
   > >In <ueengm4r25.fsf@auda.mlfarm.com> ron@mlfarm.com (Ronald Florence) writes:
   > >
   > >>One of our monitors, a Sun/Sony 16-inch color multiscan, model
   > >>365-1130, occasionally arcs while in use.  It has happened twice, at
   > >>about a one week interval: a snapping sound, an apparent flash on the
   > >>screen, the display goes black for an instant, then is fine.
   > >
   > >>Is there a cure we can apply for the arcing?  I hate paying the
   > >>freight to ship these monsters around.  Thanks,
   > >

   Most likely, the CRT is a little dirty. The Sony CRTs have had a history
   of this. By dirty, I mean that there are some small particles, or gas,
   that cause the occasional discharge in the neck of the CRT where the gun
   is.

   This is not something that can be easily fixed by an amateur. If the
   problem is a particle, it can sometimes be cleared by lightly rapping the
   neck with the monitor face down. If it is a sharp edge on the gun, than it
   needs to cleared with very high voltage applied to the pins. You risk
   damaging the CRT and/or hurting yourself if you don't know what you are
   doing.

   If you do nothing; the monitor may die prematurely, or; it may last quite
   a while. 

   Mark