Display Problems In CRT TV/Monitor

By on May 9, 2010

monitor problem

I suggest that you print out this images of CRT TV/Monitor display problems for reference. To some beginners, they do not know how a pincushion or a keystone distortion problem look like. It is important to know these images so that you will know which section to check when you test the CRT TV/Monitor with a test colour pattern program or generator. Please click on the ebook cover below if you want to be good in CRT TV Repair:

crt -tv

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314 Comments

  1. francis Chip

    October 4, 2017 at 2:13 pm

    my philips Tv screen 23 inches is turning on from the center going side ways which can be the problem

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    • Jestine Yong

      October 6, 2017 at 3:12 pm

      Hi Francis,

      Without hands on assessment to perform the voltage/signal test, I would not really know what would be the actual cause.

      Jestine

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  2. MD Nazmul huda

    October 5, 2017 at 2:18 pm

    Hi sir, my LG 15 inch crt monitor screen size horizontally has shrinken.
    From the both side almost 1.5 inch. From setting I put it 100. Virtual size is ok, no problem. A local mechanic said it might be flyback transformer, but original one is not available. Could it be other problem? Thanks

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    • Jestine Yong

      October 6, 2017 at 3:16 pm

      Hi Md Nazmul,

      If you get a non original flyback it can cause such problem. If the B+ voltage is good, safety capacitor value is within range and modulation diode/pincushion transistor is good then it can be the flyback.

      Jestine

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      • MD Nazmul huda

        October 7, 2017 at 1:13 pm

        My flyback is original. Crt never repaired since 2005. How much should be the B+ voltage?

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        • Jestine Yong

          October 9, 2017 at 9:36 am

          Hi MD Nazmul,

          Normal B+ voltage should be 110 vdc. Some designs may be higher.

          Jestine

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  3. praveen

    October 11, 2017 at 8:04 pm

    got an old crt pc monitor.when switched on there is no display(brightness) nor any osd message.after some 5 mins brightness shows up gradually after heating up.any idea what may be the cause?

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    • Jestine Yong

      October 12, 2017 at 9:52 am

      Hi Praveen,

      It could be due to weak pc tube or the heater voltage is low due to bad e-cap.

      Jestine

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  4. Arul

    October 13, 2017 at 2:23 pm

    My Crt monitor displaying only one harzontal line how to solve that pbm

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    • Jestine Yong

      October 14, 2017 at 10:21 am

      Hi Arul,

      Please visit this link:
      http://jestineyong.com/tv-single-horizontal-line-repair/

      Jestine

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  5. david

    October 15, 2017 at 10:17 pm

    my crt LG TV after switch on it when display come to appear gose on stb what's might be the plobrem

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    • Jestine Yong

      October 16, 2017 at 10:41 am

      HI David,

      Many factors such as bad power supply, bad flyback, bad Microprocessor or eeprom IC data, and etc.

      Jestine

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