The screen goes black intermittantly and often then displays "tv will shut down in 2 minutes. press any button" it has been happening off and on for over a year but now it is multiple times every day. please advise on what to do

Silly Question ---- Have you tried using more than one HDMI cable on the tv?

Hope this helps.... Your monitor has an inverter issue. You know it's an inverter problem when:
1. Your monitor starts normally and displays the startup/desktop screen for a while.
2. Then it suddenly goes off, leaving a blank (black) screen or a very dim display.

To fix this black screen problem, change the inverter board (based on your monitor brand). Source(s): http://lcdmonitorrepair.annics.com

The screen on your laptop goes black after every few seconds.

It resumes after a mouse-click or after a key-press.

Solution

Click on Start --> In search bar, type power options and press Enter.

"Select a power plan" window will be opened.

Click on "Change plan settings" next to "Balanced (recommended)".

In "Turn off the display", select "Never" from the drop-down menu under both the options "On battery" and "Plugged in".

Now click on "Save changes" button.

hope this helps

When you say "screen goes black," does the computer power down, or is it still operating? Does the sleep light come on? Does it respond to the keyboard and mouse? (Example: press the power button momentarily, wait a few seconds for the "Do you really want to shut down" message to appear, even though you can't see it, then hit the return key to answer "OK," and see if it shuts down.) Does the screen go black or come out of black if you tap the computer?
While your computer is working, go to System Preferences / Desktop & Screen Saver, the Screen Saver tab, click Hot Corners, and set a corner of your screen to Put Display to Sleep. Then next time your screen goes black, mouse your way into that corner, pause a few seconds, then mouse back out and see if your screen returns.

Sounds like your YBL-Y Buffer lower board is going out. There are 3 boards here. The Y buffer upper which controls the top half of the display, The Y buffer lower controls the bottom half and the Y-SUS main control those two boards. They work in unison. Usually if one goes out you have to replace all. You can also get lucky and just repalce the YBL and all may be well. Now if they are vertical lines up and down the OSD-On screen display, then this is indicitive on dry solder joints on the D, G E, F boards. Hope this helps...

If you are talking about a continuing display of features and menus, press the Volume Up and Volume Down buttons at the same time to shut off that display.

If the problem is that the set acts like you are pressing the front panel button and random things happen, there may be bad switches. Sometimes if Windex or other cleaners have been sprayed on to clean the picture tube, they can drip down onto the board and cause corrosion which makes the switches funky. They need to be replaced and the board cleaned of any residue.

You have a vert ic problem very common tv problem.

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You will need to reset the Netcommand and tuner settings in the set. The little indented button in the front of the set needs to be pushed in (when the set is off). The front light will blink for about a minute or minute and a half. Then, reprogram the Netcommand settings. This should solve your problem. If you need more information, then, reply to this post and I will respond.