Having problems with your IBM 17IBMRBABLKNR ?

Hi, l have a ibm thinkpad A-30 whenever l turn it on, after a second the screen goes dark.the desktop is there. l have noticed, if l close the laptop, the screen comes back on, for a second. l have hooked it up to an external monitor, everything about the screen and programs seem to be normal


Answers :

The screen goes darker because you lose functionality of backlight lamp.

That happens because there is a problem related to the inverter, that is the high voltage board supplying power to the lamp.

To start check the AC adapter connector at the back of the computer, ensure that the problem is not just the screen getting a bit darker because the laptop lose DC connection and goes on battery mode.

If the display goes completely dark, then there is a problem with the inverter.

The inverter is a small rectangular board located behind the screen frame. It is an high voltage board, and it is probably faulty.
The inverter should be replaced after ensuring the problem is not wiring harness from mainboard to inverter, or from inverter to lamp. Usually if it always fails after a time, and does not depend on vibration , it is a bad inverter.


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