Hello,

I have a HP Compaq NX 7000 Laptop, I have been having an issue that my screen was black, but when i used an external monitor i was fine. At first i thought it was my back light, but someone suggested that before i change the back light, try changing the LCD inverter.

I changed my inverter, and the screen worked instantly. The problem is , it works for about 15 minutes or so untill it warms up, then i get that high pitch sound, the screen flickers, then goes black again. If i let it rest and cool down for 10 minutes, and start it back up, it will work gret again for 10 minutes, then the same thing happens again.

I thought maybe i had a bad inverter, so i have tried another one and the same thing happens. I can count out the back light, because that works, the inverter works. So what would cause this issue of heating up the inverter?

Has anyone had this problem before?