Portege A200 screen goes very dark then works correctly

Hi, a customer has appealed to a Toshiba A200 protégé (PP415-006002) with lighting LCD problems.

It happened a few times, first time we thought it was a setting, so we gave him back...
Second time we disassembled the laptop and found nothing wrong with it, then put it back together, then it worked
THIRD TIME! : back, ran 3DMARK to stress out the graphics card could not darken.

Now no matter what I try to do, I can't do the lcd screen to darken, but whenever we give back the laptop to the customer, he always comes back with the same problem
Can anyone help me that the customer starts to become a little resless.

Sincere friendships;
Microsystems Northwest

If go you into Hibernation mode or suspend, then go back to Windows, the backlight turns back?

Maybe the inverter needs a cleaning or replacement.

Tags: Toshiba

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