Initial thoughts on Polaroid TLX-0420B...

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  • richr69
    Senior Member
    • Jul 2010
    • 58

    #1

    Initial thoughts on Polaroid TLX-0420B...

    Well, I obtained a 42" Polaroid TV which I did not have a chance to look at until yesterday. So I decided to power it and see what happens. It powered up fine and I was abale to scroll through the menu, etc. So it appeared the only problem with it was it had a black vertical line (pixel width) on the right side of the screen.

    I took the TV appart so I can get access to the ribbon cables on the LCD. My hope was that it was a bad connection. So after taking it all apart down to the LCD and powering it back up, I tapped the ribbon cable and the black line went away. Actually, by tapping the cable, I could make other vertical black lines appear and disapper. Clearly a bad connection of some sort.

    In any case, I thought I had "fixed" the TV. But I noticed that eventually the screen went black after 30 seconds or more. The Power light remained on, blue in this case. When the TV is actually off the light is red.

    So I was wondering what the initial thoughts are of everyone, regarding the screen going black. I checked the capacitors for any initial signs of bad caps, but they all appeared OK.
  • tom66
    EVs Rule
    • Apr 2011
    • 32560
    • UK

    #2
    Re: Initial thoughts on Polaroid TLX-0420B...

    Does the backlight go out when this happens?
    Does the sound stop working too?
    Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
    For service manual, schematic, boardview (board view), datasheet, cad - use our search.

    Comment

    • richr69
      Senior Member
      • Jul 2010
      • 58

      #3
      Re: Initial thoughts on Polaroid TLX-0420B...

      The lamp(s) clearly goes out. As far as sound goes, I did not have it connected to any external sources yet. I will try when I get home.

      Comment

      • budm
        Badcaps Legend
        • Feb 2010
        • 40746
        • USA

        #4
        Re: Initial thoughts on Polaroid TLX-0420B...

        Pictures of the boards?
        Never stop learning
        Basic LCD TV and Monitor troubleshooting guides.
        http://www.badcaps.net/forum/showthr...956#post305956

        Voltage Regulator (LDO) testing:
        http://www.badcaps.net/forum/showthr...999#post300999

        Inverter testing using old CFL:
        http://www.badcaps.net/forum/showthr...er+testing+cfl

        Tear down pictures : Hit the ">" Show Albums and stories" on the left side
        http://s807.photobucket.com/user/budm/library/

        TV Factory reset codes listing:
        http://www.badcaps.net/forum/showthread.php?t=24809

        Comment

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