TV won't pick up DVD or Direct TV Receiver

Tries go into tv menu goto SETUP.Go down to Ch.enter pick AIR and enter to scanning.After finish scanning should have all the free DTV broacasting channels again.

There might be a failure on the power supply or horizontal section of the TV even if you see some light inside the TV. Some of the voltages could be missing and that is why the TV fails to power up.
If you know how to use a multimeter, you could check all the fuses from your power supply.
Unplug your TV from the main AC line if you intend to do it yourself.
You will know how much you can do or it might safer to contact a tech.
Let me know if you need further assistance

You said you tried hooking the HDMI up directly from the TV to each component, and that worked. How is it usually hooked up - through some kind of switch? I'm not completely understanding your setup here.

You have either failed 24vdc power supply section or the bad back lights inverter board is out.
Please see my basic troubleshooting guide here:
http://s807.photobucket.com/home/budm/allalbums
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Parts: try www.shopjimmy.com or Ebay

HDMI ports 5 and 6 on the back of tv no longer are working. (We had a series of thunder storms so don't know if that is how they got damaged or if it was something else) but moved HDMI input cable to HDMI port 4 on tv and everything is working again. Service call placed for warranty service on tv to repair bad ports.

ok lets try this hit the power button on the DVD player some go into stand by mode and when power is interrupted you have to push the button manually also reset the surge protector next get a lamp that you know works and unplug the tv and plug the lamp into the socket where the TV was plugged into turn on the lamp, does it turn on? yes then something wrong with TV again may have been in stand by mode plug back in and try pushing the power switch on make sure the TV if it has a remote is on the right im put to get a picture say like a satellite or cable or DVD player. hope this helps.

Hello,
Power supply area could be damaged so getting an estimate of repair from qualified technician will help to decide, what to do :D

have power supply normally the voltage regulator gose bad normally start str f668b

Could well be the quality of your cables. if you have high end cables the consult a service agent. if you have the cables that came with the products, go and get some better ones.

you may have a blown fuse. check that first. Very if it still has a power.