How to detect faulty T’Con boards and to repair – Samsung LCD TVs

Samsung UE** or LE** series LCD TVs

The T-Con Board is the smallest board found inside the LCD TV and is found in LCD TV's only.  

The function of T-con board is to control logic signal of gate and source for driving TFT LCD. The T-Con Board ‘Timing Control Board’ is sometimes referred to other names, such as ‘Controller Board’ or ‘Control Board’. 

 Common faults are:  

White Display, No display, Double image, Display distortion (black and white vertical bars on the screen). 

Multiple vertical/horizontal lines across the screen. 

How to recognize the T’Con defects
* Vertical blocks, horizontal blocks or combination of both.
* Color problem.
* Picture noise.

Assure that the fault is with real T’Con board, and not the display panel.

Check if the picture problem is variable or static.

A] Lines are moving or blinking or staying on some area of the picture.

B] Picture noise is keeping move down and no changing pattern.

C] The color picture problem will appear immediately or it is getting more visible in short time.  Also, it can appear from normal picture continuously to picture problem in a short time.

D] Vertical block is at the same place, but colored lines within this block can be moving or blinking.

E] more vertical blocks.

How to replace/repair the T’Con

If the T’Con board has the Heat sink, you should detach it from the old T’Con and to add the new T’Con again.