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Marquee 8500 arcing problem

 
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BrianD73



Joined: 01 Dec 2007
Posts: 9
Posted: Tue Jun 29, 2010 8:23 pm    Post subject: Marquee 8500 arcing problem
Hi all. I've spent a few weeks trying to pin down a problem with my Marquee 8500 projector. The initial problem presented with the projector not powering up completely and a repetitive "click" being heard. Upon further investigation, I found out that there is some HV arcing going on in or around the green tube. I replaced the HV lead and the arcing seemed to go away for a short time, but now it is back. I tried to swap the CRT sockets before the arcing returned and the problem stayed with the green tube. Anyone have any thoughts on whether I need to re-do the HV lead replacement, or if there is another likely place for the arcing to be located?
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Tim in Phoenix



Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix

Posted: Tue Jun 29, 2010 9:16 pm    Post subject:
Hello


It could also be the anode splitter, or the anode plug from the other tubes or hvps. Try taking the green tube covers off, and operate the 8500 in a pitch dark room, perhaps you can see a spark.


.
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