PLASMA TVs [FAULT FINDING AND REPAIR -3]

PLASMA TV REPAIR -3


Possible Faults

• Flashing pixels on screen.
• Have audio but no video.
• Vertical color lines on screen.
• Vertical Bars on screen.
• Vertical color lines along with video.
• Picture goes Red predominant after a while.
• Horizontal lines on image.
• Dark image.
• TV turns ON, and shut down.
• Negative image.
• Screen goes black, and come on with picture.

     All the above faults are related to either X,Y or Z sustain boards. These boards look different to models to models, and manufacturer.

This is the picture of X- Sustain board of Daewoo Plasma TV.

This is an other X-Sustain Board.

     Y-Sustain board the likely to be more faulty, than others.  There are buffer boards to this Y-Sustain board.  If Y-sustain board found faulty, it is a best practice to replace these buffer boards along with it, because, damage to Y-Sustain board might damage these boards too.  There are two buffer boards.  Replace these two boards along with Y-sustain.  There is no way to check these boards by normal methods.  If one among the board is faulty, it will effect the replaced Y-Sustain. 

Like X-Sustain board, Y-Sustain also differ in size, structure to models to models.

See the picture of Y-Sustain of a 50" Plasma.

This is the picture of an other Y-Sustain board.

 This is the picture of the buffer boards to Y-Sustain. One is used as Upper buffer, and the other is Lower

In this picture you can see the location of these boards.

This is the picture of Z-sustain board.

Here the picture of Z-Sustain board to LG 50" Plasma.

Cont: