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Olli_B
Joined: 14 Jun 2009
Posts: 9
Location: Meinerzhagen, Germany
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| Posted: Tue Aug 11, 2009 7:08 pm Post subject: Problem with blue at a Dwin HD500 |
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Hallo,
i´ve a problem with my HD500 CRT. Sometime th blue systen switches off. After a few minutes, when i switch on the CRT again, the system worgs again (I can not say when it happens, maby one time in a film, then it works fine a few days). When the system switches off and i go to the GRAYSCALE MENUE or the CONVERGENCE everything is OK. I´ve no idee what it is. Also i have no shematics of the CRT. Has anybody an idea what it is?
greets
Olaf
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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: Tue Aug 11, 2009 7:09 pm Post subject: |
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There are no schematics for this unit. try reseating the blue CRT socket connectors on the motherboard. that's usually it. Also reseat the BNC connector wires on the back of the BNC input board and where they connect to the motherboard.
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Olli_B
Joined: 14 Jun 2009
Posts: 9
Location: Meinerzhagen, Germany
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| Posted: Tue Aug 11, 2009 7:19 pm Post subject: |
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Thanks for the fast answer.
I´ve forgotten to say that the blue system, when the failure ist there, verry dark. You can see a Video signal, but its dark.
greets
Olaf
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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: Tue Aug 11, 2009 7:25 pm Post subject: |
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I think it's slight corrosion on one of the video connectors. I've seen that before with the DWINs.
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Olli_B
Joined: 14 Jun 2009
Posts: 9
Location: Meinerzhagen, Germany
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| Posted: Tue Aug 11, 2009 7:29 pm Post subject: |
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thanks verry much. i will check this tomorrow. So i will look the film on the normal tv   .
Must i disconect an then conect again, or have i to clean the conectors. Or is it better to solder it?
Greets
Olaf
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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: Tue Aug 11, 2009 9:36 pm Post subject: |
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Just take them out and put them in a few times, that should do it.
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Olli_B
Joined: 14 Jun 2009
Posts: 9
Location: Meinerzhagen, Germany
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| Posted: Wed Aug 12, 2009 2:35 pm Post subject: |
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Hallo,
 I think that was it. The failure cames an i press a little bit on the Connector on the Motherboard. And what happens??? The blue system works fine. Thank you again for the verry good information. I hope now i will have an nice time with the Projector. By the way, the runningtime of the system is now 735 hours.
Next project: HD Fury
Greets
Olaf
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