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Aktuelle Version von: mayer ,

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LED 4 - Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter mightLED driver board might be installed incorrectly or need replacement.
https://www.ifixit.com/Guide/iMac+Intel+21.5-Inch+EMC+2428+LED+Driver+Board+Replacement/5957
LED 4 - Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter mightLED driver board might be installed incorrectly or need replacement.
https://www.ifixit.com/Guide/iMac+Intel+21.5-Inch+EMC+2428+LED+Driver+Board+Replacement/5957

Status:

open

Ursprünglicher Beitrag von: mayer ,

Text:

LED 4 - Indicates that the computer and the LCD display panel are communicating. This LED will be ON when the computer is turned on and video signal is being generated. If the LED is ON and there is no image on the LCD display panel, the LCD display panel or inverter might be installed incorrectly or need replacement.

Status:

open