I have have got a problem with my laptop lcd inverter(acer aspire 5052nwxmi) my screen goes dim but i can still see the outline. so i took it to a shop and they replaced the inverter for me and it worked fine. but when i got home it doesnt work again. so i disconnect and reconnect the inverter and it worked. but then after sometime it stops working so i did the same and now its working fine. i am formatting it right now but, i would like to know whats the problem is it the inverter or is the inverter insufficient? or is it the backlight?
By the way my backlight is as bright as before.

Please no answers like take it back to the repair man. i just want to solve the problem by myself first, dont want to waste time going to the repair man since its very far.