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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Wed Dec 31, 2008 2:01 pm Post subject: Marquee Brightness pulsing up and down |
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Hello all,
Happy New Year to everyone,
we have about another 9hrs till I let off the fireworks off our terrace 
Just a quick question about my friends Marquee 9500LC,
His image seems to do this intermittently, brightness decreases/ or increases about 3 clicks,
then back to normal then cycles randomly up and down.
It is random, can do it from first turn on, or like 2hrs later, then starts.
I went through his complete machine and cleaned every contact and socket.
His room is very cold around 10'c at the moment, but I don't see this as a problem, as there is no humidity.
I will be checking his supply voltage from the wall outlet, but I don't think that this is the cause.
Would appreciate any idea's or comments.
Cheers
Steve
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Dec 31, 2008 3:33 pm Post subject: |
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Too bad my sister isn't a tech (unless you need some cancer research done), she's in Basel right now..
If this is floor mounted, then I'd suspect a glycol leak that's gotten into the backplane.
If not, then the last 9000LC I had this happen in (red tube only) was the CLM or VIM. I sent the customer both, he replaced both, problem went away. It could be the HVPS but I doubt it.
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Thu Jan 01, 2009 9:14 am Post subject: |
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Yes it is all 3 tubes,
Ceiling mounted.
Hmm, Thanks for the pointers, I will swap out both and see if it fixes.
I don't wish cancer upon anyone,
Hope your Sister is enjoying the fresh dump of snow we had last night.
Cheers
Steve
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Thu Jan 01, 2009 9:24 am Post subject: |
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Happy new year Steve ! Good luck 
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Thu Jan 01, 2009 2:37 pm Post subject: |
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Should'a bought a ........ oh you know 
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Fri Jan 02, 2009 7:36 am Post subject: |
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| stefuel wrote: | | Should'a bought a ........ oh you know |
Never gives up
_________________
Tech support for nothing
CRT.
HD done right!
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