Panasonic5

PLASMA TV [FAULT FINDING AND REPAIR - 5]

Other faults due to damaged Buffer board are:

• Turns ON, and shut down, No audio or video, Vertical black bars on the screen, Vertical color line size changes, Burning smell,  White or colored horizontal lines etc:

1. Grey colored screen with no video, and the set refuse to turn OFF.  Have to unplug the set from AC mains to turn it OFF.
2. No Menu or screen shots. Switches OFF for no reason.
3. No video from any one of the inputs.
4. No picture to some channels.  Only snow is visible.
5. No picture, but menu window OK.
6. Picture distorts after a while, and sound too seems troubled. 

The above stated are the symptoms of faulty Audio/Video Main Board.

This is the picture of a typical audio/video main board.

See its location.  The location may differ set to set, and model to model.   

Plasma Panel Faults:

• Dark or Burned image on screen.
• Previous screens' static image stays for a while, and goes out after some time.
• Intermittent color change along with brightness.
• Burn in image.
• Turn ON and Shuts Down.  This may repeat.