Hitachi 36UDX10S pixel and resolution issues

Discussion in 'Displays' started by george_clark, May 12, 2003.

  1. george_clark

    george_clark Extra

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    I just purchased a 36UDX10S and am quite satisfied with the color. But I'm noticiing a resolution issue, much like I've seen with digital cameras. It seems that in views/frames with lots of information, the pixel size grows to be very large so that it looks like a very low-resolution picture. It doesn't occur in all portions of the frame, only those with lots of information. For example, I notice that wrinkles on faces are gone (compared to my old set). And when viewing a scene with lots of trees or a view of a mountain side with lots of rocks, the detail gets blurred and the pixel size becomes very large. I tried turning off the noise reduction option in the video menu, and that might have helped. But I haven't had time to really check it out. Of course, turning off the noise reduction causes some snow to come back in.

    I noticed the pixel/resolution thing on live broadcasts from my satellite system. I had both my old set and the 36UDX10S going side-by-side. The old set was OK. Then, I played a VHS program which I had recorded from the satellite. That was much, much worse; the old set still looked OK, but the Hitachi had lots of distracting fuzzy pixel issues with the scenes. I'm using the antenna input, not the A/V nor the component inputs. But that's how I'll have to use it, since the component input will be used for my DVD player.

    Has anyone seen a similar issue? Any suggestions for fix?

    Thanks

    geo
     
  2. Paul K

    Paul K Auditioning

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    Try disabling the scan velocity modulation by setting the parameter vsm-ga equal to 3 in the service menu. I noticed that satelite showed a lot of compression artifacts on this set before I disabled the vsm.
     
  3. george_clark

    george_clark Extra

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    Thanks, Paul.

    Turning off scan velocity modulation helped the picture quality quite a bit. I don't notice as much pixelation as before.

    Another thing I discovered while poking around in the service menu: The memory_init takes the settings back to as-manufactured (which is not a good thing to do). I did that by mistake, and really messed the picture up. But the FACT RESET takes the settings back to as-shipped. So I did the FACT RESET and was able to undo the problems I had creted in the service settings.

    For now, I've got everything back in reasonable shape and am pretty happy with the 36UDX10SA. .

    Thanks for your suggestion.

    Regards,

    geo
     

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