Lorenz CTV-2101R CRT repaired

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  • goodpsusearch
    Badcaps Legend
    • Oct 2009
    • 2848
    • Greece

    #1

    Lorenz CTV-2101R CRT repaired

    This was my grandmother's CRT since 1990. We bought 2 at that time, 1 for them and 1 for my parents. The second works without any problem to this day.

    The TV set of that thread on the other hand, started to have some serious convergence problems and 1 month ago suddenly lost its red color.

    I checked all the caps and had to replace 9 that were completely dead or had too high esr.

    The CRT board has turned black from heat and most of its solder joints were in bad condition. I reflowed nearly all of them and several on power supply board.

    Then the colors came back, but the convergence issues remained.

    I noticed that the magnet rings had gone loose and there was no indication of how they were factory configured. I reconfigured them very carefully and patiently and the convergence problems were fixed I was even able to enhance the colors purity. I put some drops of logo to secure them. What type of glue is suitable for this application?

    Service manual and photos attached
    Attached Files
    Last edited by goodpsusearch; 01-09-2013, 09:43 PM.
  • Pentium4
    CapXon Be Gone
    • Sep 2011
    • 3741
    • USA

    #2
    Re: Lorenz CTV-2101R CRT repaired

    Wow that is awesome! Great job, I always like to see pics of the inside of CRT's Glad you got it working!

    Comment

    • goodpsusearch
      Badcaps Legend
      • Oct 2009
      • 2848
      • Greece

      #3
      Re: Lorenz CTV-2101R CRT repaired

      Did you notice the big Samsung capacitor on the power supply board? I didn't know Samsung made caps. There are some Daewoo caps too, 2 of them were bad.

      Thank you! I wish I knew how to fix the Sony CRT TV too:
      https://www.badcaps.net/forum/showthread.php?t=25426

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #4
        Re: Lorenz CTV-2101R CRT repaired

        Samsung's capacitor business was spun off into Samwha.
        Daewoo folded a few years ago, but they made a lot of electronic components, I've seen their caps in an LG LCD TV 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

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