Zepto backlight switch

Hi, I've had a Zepto for about a year, but a week ago the backlight suddenly stopped working (I can still use the computer just fine, with a strong projector behind the screen). It did so a few months ago as well, but at that time a little wretching/knocking was enough. This time it seems more permanent.

I've considered three reasons:

1. The Inverter
2. The actual lamp
3. The backlight switch

My initial guess is, that the inverter would be more sensitive than the actual lamp (and also more easy to change).

However, each time the laptop is opened or closed, there must be a small switch somewhere, that sees to shutting off the light. I wonder if this switch could somehow have stuck, but no matter how many pieces I split the computer into, I can find to such switch.

Does anybody know how Zepto notebooks sense if the laptop is open or closed?

 

Usually laptops have a plastic switch somewhere near the hinges / bottom of the display which pops down when the lid is closed. At most times it's visible, but may be a little hard to find.

 

On most new laptops it is actually triggered by small magnets placed in the LCD cover and the top cover.

 

I had a similar problem on my 6414W a while back, where the screen suddenly died one day. External monitors still worked fine. I never tried using a strong light behind it to see if there were graphics on the screen, but it was not showing in Windows Device Manager so it might have been completely gone due to a problem with the connection or some such. One day the screen magically started working again, but alas only for a few days. I sent it in for repairs, and they stated on the invoice that a defective motherboard had been changed.

Good luck, I hope you get the issue fixed!