asus eee pc 1000h backlight issue

[mpikou]

Greetings,

Any known issues with low backlight on screen with this netbook?

Eee PC 1000H

Thanks in advance.

[dj_ricoh]

Re: asus eee pc 1000h

How??? i had only one notebook like that still don`t know whats wrong with it but i told the guy take the battery out and let if for an hour and its starting after

[fddizon]

Re: asus eee pc 1000h

Greetings,

Any known issues with low backlight on screen with this netbook?

Eee PC 1000H

Thanks in advance.

try using another lcd panels cfl without removing the bulb, just to to know if bulb is faulty. you dont have to attach the lvds cable.

[fddizon]

Re: asus eee pc 1000h

How??? i had only one notebook like that still don`t know whats wrong with it but i told the guy take the battery out and let if for an hour and its starting after

just cleaned the mobo and reseatead connectors, cleaned and lubricate fan.
after that, mobo turns on.

[mpikou]

Re: asus eee pc 1000h

try using another lcd panels cfl without removing the bulb, just to to know if bulb is faulty. you dont have to attach the lvds cable.

Its is not the bulb

I have connected a brand new Grade A screen.

I got some broken ones with exactly the same model as the default for test too. Nothing there either.

I am having some bad time reading the schematics....

Thanks i advance my friend.

[dj_ricoh]

Re: asus eee pc 1000h

page 22
BL_EN = 3.3v Pin5
LEDIN = 5v Pin 18,19
LBKLT_CTRL = power control Pin 17

[mpikou]

Re: asus eee pc 1000h

page 21
BL_EN = 3.3v Pin5
LEDIN = 5v Pin 18,19
LBKLT_CTRL = power control Pin 17

Thanks a lot for your reply.

Did you actually mean page 22 ?

I was looking at exactly the same section but I am having some hard time finding this on the motherboard...

Would some photos be helpful to you in order to guide me?

Thanks again for your reply.

[dj_ricoh]

Re: asus eee pc 1000h

yes sry.
its the connector (lvds cable)
Beware with probes you need to be extra careful not to slip or short(done that)

[mpikou]

Re: asus eee pc 1000h

yes sry.
its the connector (lvds cable)
Beware with probes you need to be extra careful not to slip or short(done that)

I guess you mean that the problem is either on the screen cable or on the connector, am I right?

I was hoping for more like a fuse on the motherboard.

[dj_ricoh]

Re: asus eee pc 1000h

unplug the cable and check the connector for V , you said that you clean the motherboard.
maybe something faulty and you need to find it or you need to supply some direct voltage direct to the connector to start the lamp inside the screen

[mpikou]

Re: asus eee pc 1000h

To be honest I did not mention any cleaning.
Some other guy did mention that

I am just have an Eee PC with no backlight which I am still trying to figure it out. I am focusing on finding some fuse since the problem is not the screen. By the way, the screen is LED, not LCD.

[dj_ricoh]

Re: asus eee pc 1000h

To be honest I did not mention any cleaning.
Some other guy did mention that

I am just have an Eee PC with no backlight which I am still trying to figure it out. I am focusing on finding some fuse since the problem is not the screen. By the way, the screen is LED, not LCD.

if led then the supply its on the board and you need to trace it down or find another V to give to the led display.
you will have to connect it directly if you have many faultys.

[mpikou]

Re: asus eee pc 1000h

if led then the supply its on the board and you need to trace it down or find another V to give to the led display.
you will have to connect it directly if you have many faultys.

This is the reason I am searching for some faulty fuse instead, like I mentioned above.
I have repaired a lot of LED motherboards with the same issue but I cannot find the proper part to repair/replace on this motherboard

[dj_ricoh]

Re: asus eee pc 1000h

This is the reason I am searching for some faulty fuse instead, like I mentioned above.
I have repaired a lot of LED motherboards with the same issue but I cannot find the proper part to repair/replace on this motherboard

take the dmm and measure the lcd connector from the motherboard and putt here the values