Hi i have this 820-2850, which came in with no backlight, when probing for q9807, i got an backlight when pinching the pin of q9807, so I resolder all the pin with leaded solder, now backlight is turning on, but its a bit delayed, like if it just wake up from a sleep, it need a few minutes to wake up the backlight ( image is present ),
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820-2850 delayed backlight
- Thread starter Yoel Ren
- Start date
We need some signals and voltages from backlight area in that moment...
Sorry i mean 820-2523
I have tried removing bil flex, but still same, backlight will be gone and comeback intermittenly every minutes
If there’s no backlight,
Lvds looks clean
Ppvout is 0v
Lcd_bklt_en 0v
Bklt_en_l 0v
There is a greenish color at the edge glue for u9600, does this have something to do with mux ?
I have tried removing bil flex, but still same, backlight will be gone and comeback intermittenly every minutes
If there’s no backlight,
Lvds looks clean
Ppvout is 0v
Lcd_bklt_en 0v
Bklt_en_l 0v
There is a greenish color at the edge glue for u9600, does this have something to do with mux ?
U9600 processes the backlight...