Laptop monitor has become dim

[cheerman1]

--My laptop screen has become suddenly very dim, its very difficult to see.

--The screen lights up during boot, able to see the startup screen and turns dim immediately

-- When fn+F7 is pressed twice, the screen comes alive for 2-3 seconds and then once again goes dim

-- when i try to increase brigtness using fn key, there is no effect

--when an external monitor (tv) connected, the display appears properly in my tv. Although if i try to make my tv as my primary monitor it does not work (guess thats a different issue).

Can you please help me with this issue.

 

[buwish]

It sounds like the backlight may be going out or perhaps the inverter is on its way out. This is usually the case in older laptops. If it is a newer laptop though, I'd get in touch with the manufacturer and see what they have to say about it.