Re: HP 4530s-no becklight signal

I succeeded to do partial repair. Now I have light but can't regulate intensity of light. So bee it.
I just installed 15K resistor between pin 7 and 8 on motherboard screen connector.
Maybe my case help somebody else in future.

Re: HP 4530s-no becklight signal



Thank you for your effort and sorry for such late answer.
I checked lid sw signal and it is present. There is 3.3v.
I have that voltage on screen as well. That is what confuses me.
Any additional idea?
...

Hi to all!
Have problem with led lcd beck light signal from motherboard after one of lcd chips burned and fried something on MB.
Have schematic and I fixed burned spot but I'm afraid HM65 on MB is fried too.
So I need advice how to override MB signal for beck light switch on?
That should be done on lcd. What to do?
Regards to all!

Re: bios file of dell

What with extracted bios files witch can not be used to flash chip because do not have same size!? It happens with newer HP bios.

Re: Toshiba Satellite A300 NO LED/NO POWER

To not open a new post Im going to continue here.
I have simmilar problem with my A300D. Have Toshiba A300D AMD motherboard 31BD3MB00F0 A000036910.
First I had problem with gpu generating bad picture (artefacts) and I succeed to fix it with hot air. Than I got annoying message "system configuration data read error" and everything was working fine after press F1 button. So I tried to fix it refluxing southbrige but no succees. After southbrige and gpu I done the same with northbrige.
After that no more blue lights...