Screen Inverter

Does the screen go completely black or is it really dimmed?

Have you tested the video card with an external monitor?

The backlight goes off, so you can still see the picture if you shine a flashlight at the screen. I have tested the video card, and it works plugging it into an external monitor.

Aren't electronics great...return that inverter maybe another will last longer.

True. I just hate it when they go wrong.

Regards.

As far as I know Dell are not selling only Inverter; but they consider Inverter as a part of Screen & sell the complete Screen Assembly. As the Inverter is spot soldered at one point and i careful desolder be ensured.

The overheating of Inverter is due to Screen at fault, not due to the motherboard. MB supplies power to Screen as well as to Inverter & Vedio signal to Screen.

It is a tip: If PowerSupply heats-up on-load it is load at fault.

GA. I agree: invariably it is the load (rather than the input signal) that damages a power supply.

Other than supplies exploding during lightning storms, I suppose

The inverter load is the CCF tubes that back-light the screen. If the power to the inverter was bad, I'd expect other parts on the mother board to be fried as well. Since only the inverter is getting hot, I suspect you have a problem with the CCF tubes themselves.

Regards.

Can CCFT be short circuited. If so what will happen to the Inverter?

Will it overload or not?

What design considerations are kept to avoid overload /burning & causing subsequent damages to Laptop motherBoard or the Screen display.

As I learned when using LED Displays of a simple Panel Meters the Backpanel Light was nearly 4 or 5 Hz lo-Voltage bulbs / LEDs? , but when with CCFT was introduced & I learned about the new LED Displays that these are like a neon-lamps & ignite at Hi-Voltage nearly 200 or above like coventional FloroTubes but need no Starter as the supply is of Hi-Freq; like inverters in Emergency-Lights or Lights in Coaster-Toyota.

Hi-Impedence built in ensures a constant current to save overload to inverter.

I am isolated for years if you kindly update my information.

Thanks.