Backlight does not come on - cannot see who is calling

I'm not totally sure what your asking, does your backlights work or do they not?...you said backlights not working but you can see the LED's, the backlights are the LED lights, or are you calling the LCD diodes in the panel the LED' backlights?

If you have backlights that are working then the issue is the main board called T-Con

An LED TV is still an LCD TV, just with LED backlighting. That model is an LCD TV. The difference is in the backlight. Both LED and LCD TVs use an LCD screen. LED TVs have LED backlighting of the LCD screen, which saves energy.

For laptops, there is a lighting source behind, called the backlight.

It may happen that only the backlight needs to be replaced.

You can figure this out by looking thoroughly via the LCD screen. As if only the backlight needs replacement, you will still be having display behind.

Otherwise you will need to replace the unit.

To turn on the automatic backlighting on a BlackBerry smartphone, complete the following steps:

1. Click Options.
2. Click Screen/Keyboard.
3. Click Change Option in the Automatic Backlight field.
4. Click On.
5. Click Save from the Screen/Keyboard menu to turn on the automatic backlighting.

No,this is the internal hard ware power supply problem

Get a new backlight, inverter is probably ok.

The way to check that the inverter is ok:

disconnect the backlight and if you hear a high pitched noise, the inverter is still good.

replacement backlight is available from a company called Being Seen Technologies.

there website is www.beingseen.com

You would need to go into the Setting Menu and find the Backlight or Power setting to lengthen the display and keypad backlight times. Just know that your battery life will decrease the higher the settings especially since it is a VGA screen.

Plain and simple there is something wrong with the LCD on your phone, needs to be repaired if possible

Have you tried checking the Battery and Display settings from the main screen Settings menu? There is an option to enable or disable the backlight, as well as set the brightness.

There is also a setting called "Use ambient light sensor", which sets the backlight and keyboard light to only turn on if it is dark when you are using it.