Here's a strange one - just replaced a screen backlight inverter on a toshiba satellite U-400. All works fine. Then it becomes intermittent.
When I close the laptop lid (Laptop goes into hibernate) and open it again, the screen invertor won't work - the unit boots up and the screen is there (if you shine a flashlight onto it - you can see the desktop).
So, I shutdown the laptop, re-boot and put inot sleep then hibernate, then sleep etc. and all is fine
Then I shut the lid, wait for it to hibernate and open the lid - no screen backlight
Any ideas ?
lid switch ?