E1505 can't control screen brightness after repair
I recently sent my laptop to be repaird to a third pary company to fix a problem with the screen. (The screen was flickering and darkening).
That company told me that they needed to replace my LCD and charged me for the replacement. When I got my laptop back, I find out that I can't control the brightness of the screen. When I complained to them they said it could be a fault with the inverter now and that they are willing to replace it, but for another extra charge.
When I run the Dell diagnostics tool at boot time, it gives me the following messages:
Re: E1505 can't control screen brightness after repair
Unless you're willing to pay for a second repair from another company, you don't really have an option. There's a good possibility the problem could be other than the display panel - did you send them your AC adapter, or did they use their own? If you sent yours, try replacing it - it could be faulty.
If you didn't send yours, assuming they tested the system, there's at least a decent chance it's the power circuitry on the mainboard that's faulty, not the inverter - the power to the inverter is drawn through the system board.