i have this problem with toshiba a200 board made by inventec mb-a02 the laptop work well with battery but when connect the ac adapter no display.where can the problem bethis uses a winbond wpc8763ldg kbc intel ich8

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repairs of laptops and selling of components

no display - it is backlight off or picture is black with backllighting?
may be, but try to check INVERTOR in first and check lamp of backlight

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no display the inverter and backlight ok when using battery but if we use adapter then there is no display

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repairs of laptops and selling of components

look volt... on invertors input/
how many?
fine!!!!!!!!!!!
the iljichs lamp beging light
press Fn+(key with bright logotip+) OK?
if not - chek BIOS/

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i suspect bios but cant find this model on the toshiba site .what a pain why do they make models like that.

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repairs of laptops and selling of components

You tried to regulate buttons or not?
Brightness varies?
Can simply to a minimum brightness is lowered at power supply from the AC???
Insert the adapter and try! Brightness varies or not?

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