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James3927
Joined: 10 Oct 2019 Posts: 5
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| Posted: Thu Jul 18, 2024 12:25 pm Post subject: VPH-1040QM Red Grid off screen/convergence issues |
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seeking some help for next steps in aligning the red tube on a Sony VPH-1040QM
i can align green and blue nicely, however red horizontal is still a few cm off when using the knob and pot adjustments to the max
i've read through the service manuals and through some forum posts, some comments reference adjusting the yoke however i thought it best to see if anyone can confirm before i much around with that
appreciate all advise!
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 18114 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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James3927
Joined: 10 Oct 2019 Posts: 5
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| Posted: Thu Jul 18, 2024 11:08 pm Post subject: |
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thank you Kal appreciate the steer.
i've gotten through the manual isntall & service listed on your site (thanks again for providing the great resources too), and throw distance etc all seem correct.
I'll have a go with the lens spacers and see if i can center there first,
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kal Forum Administrator
Joined: 06 Mar 2006 Posts: 18114 Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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James3927
Joined: 10 Oct 2019 Posts: 5
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| Posted: Fri Jul 19, 2024 1:03 pm Post subject: |
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well RTFM,
for anyone coming across this particular projector
1- it has custom/bespoke spacer bars for the tube mounting, if you are missing these for a particular config likely you will need to use springs/washers to achieve the desired result
2- for the lens spacing, the manual lists guide marks/holes for 100" & 200" and advises the 100" is fit for the 72", however the unit also has a mark for 72" which needs to be used specifically for 72", go figure.
my next problem is one of the trim pots have failed, RV16, 1-230-630-11, Res, ADJ, Carbon 10K, reading now into replacements,
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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 Jul 26, 2024 4:34 pm Post subject: |
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Mouser should have a replacement. They are nothing critical, just get the lead spacing about right. eBay will probably have something too.
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