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Display Problem In LCD TV Repaired
The complaint of this Singer LCD TV was distorted display with a white vertical line across the screen.
From experience, whenever I see distorted display in the screen the first thing I do would be to check the ribbon cable contacts (connector).
If the contact is dirty, rusted or filled with dirt, it would not be a surprised to see the TV screen with distorted picture or with some weird symptoms.
Once you have located the connector, then gently lift up the socket cover so that the cable can be removed.
Detach the other side of the cable too as you need to clean both sides to fully restore a good picture.
You can use chemical spray contact cleaner and eraser (bottom photo) to remove the dirt and make the contact pins shinning again.
Once the connectors are properly ‘serviced’, you can gently insert the cables back to its location. Do not force it as you insert it otherwise the cable contact pins can bend. This will create another problem and need more time to solve it. So do it safely in the first time to avoid unnecessary problem. After fixing back the cables and powered On, look at the TV screen below:
Conclusion- If after cleaning the ribbon cable and the problem still persist this means it is not the contact problem. In that case, you may have to check the LCD Panel, T-con board or even the motherboard. If you need to increase the repair knowledge of LCD /LED TVs you can check out Damon’s and Kent’s ebooks.
This article was prepared for you by Suranga Bandara who owns an Electronics shop in Anuradapura, Sri Lanka.
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Note: You may check out his previous repair article in the below link: