How Do I turn off Display

[ceedoubleyou]

When I'm using TV as monitor via HDMI cable? TIA

 

[simsaladimbamba]

Close the lid and use the MB in clamshell mode?

Apple Portables: How to use your computer in closed clamshell (display closed) mode with an external display
or
InsomniaX
or
InsomniaT (rebuild for SL) (fix for 2011 MPBs)
or
Caffeine
​

Or use the F1 key to turn the brightness down?

 

[ceedoubleyou]

Close the lid and use the MB in clamshell mode?

Apple Portables: How to use your computer in closed clamshell (display closed) mode with an external display
or
InsomniaX
or
InsomniaT (rebuild for SL) (fix for 2011 MPBs)
or
Caffeine
​

Or use the F1 key to turn the brightness down?

Cool, I'll try that, thanks.