LCD tv works, but screen is all white; how to check if it's the LCD, its controller or video controller? - professional lcd monitor
This question is very familiar for technicians and engineers with LCD technology LCD.
Please avoid giving in order to verify the repair estimates, etc.
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This is a new display. When lit, the screen goes blank and stays there for a while.
The microcontroller works because the power button and LED work as they should and because when the input signal does not change the monitor into standby mode after a short time.
It's all in a table, of course, so the problem must be one of the following:
Video chip 1) can be integrated on the motherboard for errors and does not produce the results needed for the LCD board
2) LCD (the Commission, may be as long as the LCD itself) bad, very measured in a small number of those who reported short-Capacitor
3) The LCD screen itself (which led to this forum) is completely short-circuited
I closed a bad connection.
How can I in the last three, without parts?
Sunday, January 3, 2010
Professional Lcd Monitor LCD Tv Works, But Screen Is All White; How To Check If It's The LCD, Its Controller Or Video Controller?
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Try the menu button for the first time ... When you get to the menu, then you know that this is not the screen or the Council of the display drivers ....
It is, therefore, whether the video processor or switch the input ...
HDMI-TEST .... Then take the video at all?
TEST next component input .... any video source?
Both signals flow in the last part of the video-processing path, so you can check whether the IC actually works .... OR NOT.
If it works, then you should try the "very complicated" video-processing circuit that the signal of low resolution video scaling in high-definition video processor can accept as a character ..... reproduced
Therefore, we test come with HDMI and component inputs for the first time ... To determine whether only the video processor or modify messages, or lower converter circuits Def Hi Def ......
Divide and conquer ..... The first rule of a television technician ....
PS .... Do not trust your ability to test, which seems too many mistakes in others .... Board
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