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Samsung S42SD - YD04 plasma screen fault judgment and treatment methods

Time：2014-07-31 08:57:10 Source：Network Author：Unknown Clicks：1823

2. A appears on the screen, or several levels are not bright line:

Check Y driver board and Y BUFFER between the socket whether there is good, not good, again good socket, if is good, according to the dark lines appear on the screen, lower, change the Y BUFFER (up, down)

3. A appears on the screen, or several brighter than the rest of the horizontal lines on the edge of the multiple levels of bright line:

Check Y driver board and Y BUFFER between the socket whether there is good, not good, again good socket, if is good, according to the dark lines appear on the screen, lower, change the Y BUFFER (up, down)

4. A vertical to appear on the screen is not bright line, or a whole piece of vertical not bright

A. if it is a not bright vertical line, COF package has a problem.
If appear the whole vertical b. there is no light, first check whether COF package and logic BUFFER the connection between the socket has a problem, if no problem, check the logical connection between the socket BUFFER and logic board is normal. If is normal, replace the logical BUFFER. Finally, after replacement, if still cannot solve the problem, change the logic board.

5. The screen shows a monochromatic signal, a vertical one or several of the other colors of light line:

A. if the vertical bright line is there a other color, COF package or there is something wrong with the screen.
B. if appear the whole vertical other color is light, first check whether COF package and logic BUFFER the connection between the socket has a problem, if no problem, check the logical connection between the socket BUFFER and logic board is normal. If is normal, replace the logical BUFFER. After replacement, if you can't solve the problem, change the logic board, in the end, if changing the logic board problem is still there, is the COF package has a problem.

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