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Viewsonic VX2235WM White Display

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    #1

    Viewsonic VX2235WM White Display

    Replaced all Caps, still have a white display. I'm assuming the backlight is working but no signal, therefore white screen. If you need more info, let me know.

    Any suggestions?

    Thanks Much!
    Tags: None
    #2
    Re: Viewsonic VX2235WM White Display

    All white means the back-light is working but the video chip isn't.

    No signal would not normally give a white screen if the video -chip- is working.
    Default output from the chip [as you would get with no signal in] is a blacked out screen.
    Might also be a connection problem between the video circuit and the LCD.
    .
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      #3
      Re: Viewsonic VX2235WM White Display

      Originally posted by sghill99
      Replaced all Caps, still have a white display. I'm assuming the backlight is working but no signal, therefore white screen. If you need more info, let me know.

      Any suggestions?

      Thanks Much!
      Two. PCBONEZ is correct with suggesting you check for a connection problem. Within the past week someone had the same problem, they had forgotten to hook up the cable between the panel and the logic card.

      There is usually a fuse on the 'panel circuit board'. This is a pc board that is part of the panel, often under a metal cover. If this fuse is open it will result in a white display.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

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        #4
        Re: Viewsonic VX2235WM White Display

        PlainBill, the fuse you speak of, is it one of those surface mount components, the really really little ones? I've checked and double checked all the connections, so I'm sure that's not where the problem lies... also, I've got a copy of the service manual (80 pages), schematics... I'm just starting out and most of it looks Greek to me...

        Thx, in advance...........

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          #5
          Re: Viewsonic VX2235WM White Display

          If you're desperate for something to cross reference, I can take mine apart, would have thought the service manual would be of most use though.

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            #6
            Re: Viewsonic VX2235WM White Display

            Originally posted by sghill99
            PlainBill, the fuse you speak of, is it one of those surface mount components, the really really little ones? I've checked and double checked all the connections, so I'm sure that's not where the problem lies... also, I've got a copy of the service manual (80 pages), schematics... I'm just starting out and most of it looks Greek to me...

            Thx, in advance...........
            Precisely. It's usually about the size of a kernel of unpopped popcorn.

            Is the service manual a hard copy or a PDF?

            PlainBill
            For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

            Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

            Comment

              #7
              Re: Viewsonic VX2235WM White Display

              The service manual is PDF... For experienced trouble shooters the service manual probably is all you would need, but as I'm just starting out, reading it isn't real easy at this point, Seanc... As I grow in experience, I'm sure I'll be able to make use of it/them...

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                #8
                Re: Viewsonic VX2235WM White Display

                Post the service manual please?

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