Having problems with your Fujitsu Siemens LifeBook S7020 Notebook ?

I have a Fujitsu Siemens Lifebook s7020 with no backlight. The display is showing everything but it's hard to see because there's no backlight. Everything is also fine with an external screen. I have a spare s7010 laptop. I have already changed the entire screen. Problem stays the same (normal display but no backlight). So I think the problem is on the main board. Maybe the powersupply toward the inverter/backlight?


Answers :

That's right. You have good answer. Mainboard to LCD = have two connection, to back in the LCD (coaxial cable) and to inverter video (for backlight). You must replace new one of inverter video. For spare part, ask to dealer where you buy it.
The Inverter board must be tested and eventually replaced. The inverter is the small board located at the base of display. This is connected to one side to the backlight lamp, to which supplies AC high voltage, and on the other side to motherboard, where receives DC voltage.

Inverter contacts to otherboard and to lamp must be tested , using a multimeter to read volts. The inverter is an AC board, and for safety reason the test must be done by a trained repairer.
If the inverter is OK check the contacts to motherboard and wiring harness to motherboard..

Also ensure that light is not just dimmer because energy save mode is on, or because the laptop is running on batteries.
Repair Help & Product Troubleshooting for Fujitsu Siemens LifeBook S7020 Notebook

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I have a Fujitsu Siemens Lifebook s7020 with no backlight. The display is showing everything but it's hard to see because there's no backlight. Everything is also fine with an external screen. I have a spare s7010 laptop. I have already changed the entire screen. Problem stays the same (normal display but no backlight). So I think the problem is on the main board. Maybe the powersupply toward the inverter/backlight?


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