MacBook pro display black

Alj06 wrote:

MacBook pro display was working before I cleaned the keyboard. I may have hit a combination of keys that has turned off the display. When I attach the pro to an external monitor everything works fine.

Turn the brightness back up...(?)

Change your Mac display's brightness

ref: Clean your Mac computer's screen or display

Alj06 wrote:

Yes, first thing I tried. Tried booting to safe (think that's the term) mode, nothing but again if connected to a monitor works fine. Thanks

if your display has failed— take it in . Hardware issues can not be resolved on-line here.

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

Contact Apple for support and service - Apple Support