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helfriwj
Joined: 29 Oct 2006
Posts: 51
Location: Pittsburgh,PA
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| Posted: Sat May 04, 2024 2:43 pm Post subject: 1292 blue tube flashes on startup then stays off |
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My 1292 blue tube stopped working there are no error codes When we start the projector the blue tube flashes on and then does not light. any thoughts?
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bluemoonhu
Joined: 16 Feb 2021
Posts: 259
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| Posted: Mon May 06, 2024 3:06 am Post subject: Re: 1292 blue tube flashes on startup then stays off |
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| helfriwj wrote: | | My 1292 blue tube stopped working there are no error codes When we start the projector the blue tube flashes on and then does not light. any thoughts? |
Inspection sequence: VGA-5BNC - neck board - RGB input board - driver board
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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: Mon May 06, 2024 4:00 am Post subject: |
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Look at the back of the tube in the dark and see if there's an orange glow
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CRT.
HD done right!
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helfriwj
Joined: 29 Oct 2006
Posts: 51
Location: Pittsburgh,PA
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| Posted: Mon May 06, 2024 2:06 pm Post subject: |
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I have a 1292 that I took apart and replaced the neck board with the parts projector and it is working.I am running out of parts and would like to know what typical components would go bad on the neck board that I could replace. I also have a 1292 that is showing a 02 fault would anyone happen to know what on the DC or E boards would cause this fault I know that it is one of these two boards because I had this fault on the projector I am using now and when I replaced the boards the fault went away. I do not have any more E - DC board combinations
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Thu May 09, 2024 8:58 pm Post subject: |
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Guys
Possibly a bad neck board or cathode to heater short. Try swapping neck boards, blue and red. If the problem moves to red it is the neck board.
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