Acer Aspire 5532 (LA-5481P): No Backlight

[speedypro]

Has anyone come across this before? Screen and cable are 100% ok.

Thanks.

[masud]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

check for fuses around.

[speedypro]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

Hi. Looking at the schematic, I see no 'local' fuses around.

[tomodachi]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

can you share it ? then we can check out

[speedypro]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

can you share it ? then we can check out

Here

[tomodachi]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

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if everything is fine about lcd power circuit you can replace KBC

[speedypro]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

if everything is fine about lcd power circuit you can replace KBC

What's KBC?

[tomodachi]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

What's KBC?

I/O control IC ( KB926QFD2) @U27, check out the schematic

[innocentforeign]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

external display working or not ?

[speedypro]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

external display working or not ?

Yes, working great.

[dycc]

Re: Acer Aspire 5532 (LA-5481P): No Backlight

LVDS
pin123=19v
pin4=NC
pin5=on/off or backlight enable=3.3v
pin6=backlight control= brightness adjustement = may vary between 1.2v and 3.3v for full brightness.

which voltage is not present ??????