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Jesse S
Joined: 12 May 2007
Posts: 209
Location: Etobicoke
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| Posted: Tue Dec 27, 2011 4:46 pm Post subject: xg135 - blue raster shaking intermittently |
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Recently my blue raster has been "shaking". The image will look converged, and then the blue raster will quickly jump to the left a few inches then snap back into alignment. The red and green are stable.
To be sure it wasn't the cables I swapped the red and blue and the issue remained on the blue so it's not that. The only possible other unknown is my Extron 108.
Any ideas?
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Dec 28, 2011 2:30 am Post subject: |
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What i reckon itll be is the connectors that go to the deflection yoke, pull them off and give them a clean up, see if that fixes the issue for ya 
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Jesse S
Joined: 12 May 2007
Posts: 209
Location: Etobicoke
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| Posted: Wed Dec 28, 2011 5:47 am Post subject: |
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So like in this pic?
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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: Thu Dec 29, 2011 12:36 am Post subject: |
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Yes, shoot some www.caig.com cleaner onto the pins. I'm a bit concerned that you've got image shifting by INCHES. That's not usually indicative of bad HDM yoke connectors, I'd suspect the V/H shift board underneath the boards above.\
I've got spares, but swap the blue H shift lead with the green, and see if the green starts shaking. If I remember correctly, the H shift connectors are the ones closest to the back of the chassis.
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Jesse S
Joined: 12 May 2007
Posts: 209
Location: Etobicoke
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| Posted: Sun Jan 01, 2012 5:37 pm Post subject: |
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I pull the various connectors on that board and cleaned with isopropyl alcohol. The blue jitter has stopped so hopefully that was the cause. I'll get some Deoxit and do it again.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Mon Jan 02, 2012 3:59 am Post subject: |
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If its stopped, just leave it til it does it again
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zxh398
Joined: 05 Nov 2009
Posts: 55
Location: china guangzhou
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| Posted: Sun Jan 08, 2012 8:43 am Post subject: |
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If the picture with jitter, then WAVA board grid failure, if only the jitter problem, then replace the board of the OSD board electrolytic capacitor may be able to troubleshoot
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zxh398
Joined: 05 Nov 2009
Posts: 55
Location: china guangzhou
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| Posted: Sun Jan 08, 2012 8:48 am Post subject: |
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XG horizontal movement by the convergence to complete the circuit board has nothing to do with the horizontal scan,
Some changes in the level of scanning projection board level to achieve the level of mobile
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Jesse S
Joined: 12 May 2007
Posts: 209
Location: Etobicoke
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| Posted: Mon Jan 09, 2012 4:46 am Post subject: |
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It stopped after I cleaned with the isopropyl. Should I do anything more or wait?
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Mon Jan 09, 2012 8:37 am Post subject: |
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You dont need to do anything more. Not in my opinion anyway.
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