Can you help me troubleshoot a DLP problem?

Discussion in 'Projectors, Screens & Video Processors' started by mikerino, Aug 6, 2013.

  1. mikerino

    mikerino
    Standard Member

    Joined:
    Aug 6, 2013
    Messages:
    3
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Hi guys, I have a smart PG-MB66x DLP 1080p projector and the picture is terrible. There is probably a term for the picture issues I am getting but I don't know it. Its kind of like a halo around objects, blocky, looks very low res. I use a HDMI switching stereo to select my sources, HD Tivo or 1080p Roku and I also have a DVI from my PC, all look about the same. I tried bypassing the stereo and had the same results. If anyone could help me define my problem or help me to troubleshoot it or tell me that I need a new one I would really appreciate it.

    Thank you.. Mike in New Hampster.
     
  2. Peter Parker

    Peter Parker
    Distinguished Member

    Joined:
    Apr 6, 2001
    Messages:
    13,817
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    UK.
    Ratings:
    +3,311
    Hi Mike,

    Is it this model:

    Sharp Projectors: Sharp PG-MB66X DLP projector

    It's native res is 1024 x 768 and 4:3 so will be down resing your sources, but even so, I wouldn't have thought it would look as bad as you say.

    Have you got the sharpness control turned up? That can produce halo's and ringing around objects. Having the brightness set too high may be highlighting details that would usually be hidden in shadows etc so pixels and image noise would become visible, so you should use a test disk to set it correctly (THX Optimiser for example).

    Have you just taken ownership of this pj?

    Gary
     
  3. mikerino

    mikerino
    Standard Member

    Joined:
    Aug 6, 2013
    Messages:
    3
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Sorry, I posted the wrong projector, it is really a Optoma HD806. So I am seeing halo's and ringing? I have had the projector for years and have replaced the bulb once. It seems like it had a beautiful picture which gradually got worse. I defaulted all of my settings.
     
  4. Peter Parker

    Peter Parker
    Distinguished Member

    Joined:
    Apr 6, 2001
    Messages:
    13,817
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    UK.
    Ratings:
    +3,311
    I'm just guessing as it's difficult to know exactly what you're seeing, but it could be the settings if it used to look better before. Can you check to make sure it isn't somehow projecting at a lower res than native, and that keystoning isn't turned on? Does what you're seeing occur at the boundaries of colour graduations, like on peoples faces? It could be the colour wheel timing or the wheel going faulty/out of sync.

    If you can post a pic that shows what you're seeing, it might help.

    Gary
     
  5. mikerino

    mikerino
    Standard Member

    Joined:
    Aug 6, 2013
    Messages:
    3
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    1
    Ratings:
    +0
    Heres what it looks like.
     

    Attached Files:

  6. Peter Parker

    Peter Parker
    Distinguished Member

    Joined:
    Apr 6, 2001
    Messages:
    13,817
    Products Owned:
    1
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    UK.
    Ratings:
    +3,311
    Looks like a colour wheel problem - Optoma had a similar firmware related issue with the H77 from new. It might be fixable if you can adjust the timing in the menu, but it's usually in the service menu and you have to be careful you don't change anything else that might screw up the pj completely. I wonder if cleaning the colour wheel or sensor might help - I seem to remember reading somewhere that the sensor or wheel could get a bit dirty over time and have trouble syncing the wheel, and cleaning them fixed it...

    I'm not familiar with the model, but maybe someone else is. You could always try the US forum avsforum.com which has a much larger user base and there's bound to be someone there who knows how to get into the service menu or how to clean the wheel on that particular model.

    Gary
     
    Last edited: Aug 7, 2013

Share This Page

Loading...
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice