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BRIANJOHNSON
Joined: 19 Apr 2006
Posts: 92
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| Posted: Thu Dec 18, 2008 1:59 am Post subject: 1272Q LINES |
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I removed lenses and the tubes to move projector. While setting it up I noticed these lines at top of screen. I checked all connections and they all seem to be in the right places. any help from the crt gods much appreciated.
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BRIANJOHNSON
Joined: 19 Apr 2006
Posts: 92
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| Posted: Thu Dec 18, 2008 8:49 pm Post subject: |
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ANYONE OUT THERE  
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jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
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| Posted: Thu Dec 18, 2008 9:28 pm Post subject: |
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DUNNO WHAT THAT IS
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Thu Dec 18, 2008 9:43 pm Post subject: |
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Is it there in the internal patterns or just the external signal? Was it there before you did your new setup or is this new?
SC
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waterlily
Joined: 29 Aug 2008
Posts: 44
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| Posted: Thu Dec 18, 2008 11:17 pm Post subject: |
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dunno 
Never saw that before, well only once in an old 14" tv where there were massive amounts of signal noise and interference from bad wiring and connectors.
Your pic shows it is happening for all three tubes...
What ecrabb asked, does it happen too on the internal patterns?
Is it exactly the same on the three tubes?
If so,
Have you tried disconnecting/reconnecting the white large power supply connectors?
You can't see them here but they would be to the left of this picture right below the red lens.
http://curtpalme.com/Sony125x_Layout4.shtm
Try also re-seating some of the boards as in:
http://curtpalme.com/Sony125x_Layout8.shtm
http://curtpalme.com/Sony125x_Layout9.shtm
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wallace123456
Joined: 14 Aug 2006
Posts: 2236
Location: Northwest VA area
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| Posted: Fri Dec 19, 2008 1:42 am Post subject: |
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Try some pics with internal patterns and then some with external patterns.
wallace
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BRIANJOHNSON
Joined: 19 Apr 2006
Posts: 92
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| Posted: Fri Dec 19, 2008 3:00 am Post subject: |
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here is what it looks like with the internal pattern
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wallace123456
Joined: 14 Aug 2006
Posts: 2236
Location: Northwest VA area
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| Posted: Fri Dec 19, 2008 3:12 am Post subject: |
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I assume it is the same from left to right? Also, is it on on all 3 tubes? Try shuting off 1 tube at a time, and then 2 tubes. Still there on each tube?
wallace
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Dec 19, 2008 3:20 am Post subject: |
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I'd like to see a regular cross hatch pattern.
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ILOVEMYTHEATRE
Joined: 23 Jan 2007
Posts: 6
Location: NHILL, VIC AUSTRALIA
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| Posted: Sat Dec 20, 2008 12:02 pm Post subject: |
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had the same problem it was in the rear video driver boards faulty vph chip i think
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BRIANJOHNSON
Joined: 19 Apr 2006
Posts: 92
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| Posted: Sat Dec 20, 2008 1:41 pm Post subject: |
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I noticed that the problem only happends on the green tube. I should have check this I made an assumption that it was all three tubes. I am going to check the green socket later on tonight.
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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: Sat Dec 20, 2008 2:43 pm Post subject: |
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This could be the video output board or it could be the vertical board. I have both in stock for cheap.
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