Black screen, power on chime, no external video
- I have the startup chime & laptop powers up
- Do not see icons by shining light on screen
- Brightness all the way up
- Twice the screen came up for 2 minutes, then went black
- I have done the PRAM/NVRAM & SMC reset many times
- I have re-seated the video cable to logic board
- I have removed & re-connected hard drive
- If the power is low I see the low-battery flashing indicator on screen
- Connect HDMI to external monitor does not work
crwdns2934109:0crwdne2934109:0
crwdns2944067:02crwdne2944067:0
What happens when you press the D key do you enter into diagnostics?
Reference: Mac startup key combinations
crwdns2934271:0crwdnd2934271:0 Dan crwdne2934271:0
Thank you for responding, same blank/black screen.
- Tried holding down D and starting up: I hear the chime but screen stays black
- Pressed & held D after chime....same result as above
crwdns2934271:0crwdnd2934271:0 RedCorvette crwdne2934271:0