Red Color Problem In CRT TV

By on July 3, 2013

I have got a problem with  Jumbo  CRT TV chinese make model No. KB210 51 cm. It displays a red faint colour with many lines from top to bottom. The sound is ok except the picture problem.

Answer:

It could be the red transistor or the red gun in the tube have problem. If the red gun is shorted in the tube the lines will appear. I suggest that you compare the Green and Blue driver transistor voltage/waveform for reference. Any differences in the signals indicates that you should troubleshoot the area. Using an oscilloscope  will me much easier to see as compare to voltage.

 

Likes(12)Dislikes(4)

4 Comments

  1. shibsankar maity

    April 1, 2017 at 9:55 pm

    lg tv pink color problems.picture tube base open R G B volt ok.but base canection badme r g b volt problems

    Likes(1)Dislikes(0)
    • Jestine Yong

      April 3, 2017 at 9:23 pm

      Hi Shibsankar,

      Have you tried to adjust the RGB vr? What about the OSD menu setting? If all the RGB voltages at the CRT board are good this could suggest a weak tube. Have you tried run it on a color test pattern to see which color is weak?

      Jestine

      Likes(1)Dislikes(1)
  2. longlise

    June 16, 2017 at 10:41 am

    sir there is always pink color in
    my colour TV how can I repair please help ur help will be very useful for me .

    Likes(1)Dislikes(0)
    • Jestine Yong

      June 17, 2017 at 2:12 pm

      Hi Longlise,

      May i know what have you checked?

      Jestine

      Likes(1)Dislikes(0)

Leave a Reply

Your email address will not be published. Required fields are marked *