Tecra A2 backlight issue - image is very faint

Hi
I have a Tecra A2 with a backlight problem.
The LCD is displaying correctly, but without any backlight the image is very faint.
When the laptop is booted the display lights up perfectly for about 3 seconds before turning off. The laptop successsfully boots and can be used with an external monitor. If I now close the lid the laptop backlight lights up again for a few seconds before going off again. I have tried a new backlight inverter which had no effect. The lid closed sensor is the magnetic type (presumably a reed relay) and measures 100Kohms when open? and 0 ohms when closed.
Could this 100K be the problem?
Has anyone experienced any of these symptons or does anyone have any backlight inverter data, i'm wondering if I have a second faulty inverter.
Could this be a faulty FL backlight issue?
Any help would be greatly appreciated.

You are right Philip.
For me it looks like the faulty FL-inverter too
You said that the display on the external monitor looks fine. So we can eliminate a GPU fault.
I think your should contact the ASP in your country. The technician should check the faulty part (probably FL inverter) and should replace it with a new, compatible one.
>i'm wondering if I have a second faulty inverter
I see you have already replaced the one FL inverter and the issue still appears hmm to be honest I believe you have used a wrong one but who knows nothing is impossible.
So ask the ASP technician for the further handling
Best regards and good luck

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