In message , at 09:42:49 on Sun, 8
Mar 2015, Roland Perry remarked:

http://www.tomshardware.com/reviews/...ht,2930-5.html

....

I've got a large non-LED TV as a computer monitor and I can feel the
heat coming off the screen from six inches away.

Yes, but that isn't the backlight.

What is it then (it goes away when I put the screen into standby).

It's also more noticeable when the computer goes into black-screen-saver
mode, which is consistent with that being the highest power consumption
situation in the table in the article linked above.
--
Roland Perry