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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Tue May 13, 2008 9:27 pm Post subject: BG808S problem: green gone faint |
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today i was going to enjoy a movie but the picture was all purple. looks like the green tube is not putting out as much light as the other two fellows on the sides.
any suggestion to what this can be caused by? where do i start troubleshooting?
thanks in advance
Morten
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Wed May 14, 2008 7:58 am Post subject: |
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Swap neck boards and see if problem follow...
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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Fri May 23, 2008 6:48 pm Post subject: |
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neckboards swapped, green still faint. tube?
Morten
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Fri May 23, 2008 6:58 pm Post subject: |
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have you tried setting the G2 voltage? Just a guess...
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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Fri May 23, 2008 7:26 pm Post subject: |
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tried to adjust G2 for the green tube, only resulting in getting a greenish shade where everything should be black and revealing some "zig-zak" lines but the objects thate are supposed to be white is still purple'ish. looking into the tubes reveals the green to be emitting light at a lesser intensity then the two neighbours.
one additional thing i noticed is that the neckboard that was on the green tube (now sitting on the red) does not have the green LED lit.
Morten
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Fri May 23, 2008 7:59 pm Post subject: |
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How many hours on the tubes ?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri May 23, 2008 8:07 pm Post subject: |
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Is the problem there with the internal menus and test patterns? When you swapped the CRT sockets did you swap the video boards also? I think they are attached on the BG808s. Also did you leave the wires attached when you swapped them or unhook wires and reconnect to the different sockets?
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Ile
Joined: 09 Mar 2006
Posts: 1491
Location: Jyväskylä, Finland
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| Posted: Fri May 23, 2008 8:31 pm Post subject: |
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So it's bad tube, driver- or switcher board. If you use port3 it could be also bad port3 board, so test port5 first.
Newer tested this method, but I think it can be done without problems. Connect R neck board cable (J1) to G and G cable to red to be sure if it's bad tube. Other option is swap tubes, but that is lot more work.
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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Fri May 23, 2008 9:34 pm Post subject: |
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I'm using the HDFURY with RGBHV input on port 4/5. never thought about trying another port, but i just plugged my old videocamera to port 1 and whomp there it was, picture in all it's natural colors.
What now?
Morten
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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: Fri May 23, 2008 9:45 pm Post subject: |
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My guess is that you pressed 6 on the keypad, which put the set in component mode. Try pressing '5', is it OK now?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri May 23, 2008 9:49 pm Post subject: |
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| modda wrote: | I'm using the HDFURY with RGBHV input on port 4/5. never thought about trying another port, but i just plugged my old videocamera to port 1 and whomp there it was, picture in all it's natural colors.
What now?
Morten |
So the internal menus were fine then?
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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Fri May 23, 2008 9:52 pm Post subject: |
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got to be kidding me, simple user error turned into two weeks of googling and troubleshooting.
thank you!
Morten
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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 May 23, 2008 11:53 pm Post subject: |
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Was Curt right Modda?
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HD done right!
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modda
Joined: 17 Sep 2007
Posts: 9
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| Posted: Sat May 24, 2008 8:54 am Post subject: |
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indeed he was. everything is working normal now.
Morten
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