You may find its not the "Screen" but the inverter, or graphic card. This maybe located on the laptop, probably near the connection under the keyboard.
The screen and external view use different connection points, and draw on different parts of the components.
I would be careful whom you take it too, as they should know what the fix is and not, we can try this and try that.
The market indoor market seems to be favourite. Various electronic stores in there.
Work out the age of the unit verses repair costs. As you can live with a monitor and it works just fine.
Hope that helps.