I have a sony bravia kdl 37m3000. We have cable and the wide screen would not go away so we unplugged the cable to reset the tv. Now the cable and the tv comes on but no picture.

Tries tv and cable or satalite boxes unplug,replug it back like about an hour later.Than tries goes into the tv Menu go into Audio Setting and do a resetting back to the factory setting.Follow these steps,should help ur tv sound to come back.

A short fix is to unplug the hdmi cable and shut down the tv compleetly, then get the tv on and plug it in, the tv see the new connection and reset the value's for sound

Was exactly what you said. The cable box settings were in wide mode. Couldn't figure it out at all. Funny thing was too.. on my cable box remote, the button under the #9 button is the # button.. it doesn't say zoom at all.. but it totally controls the zoom.

So thanks for that.. AND thanks for saying "under the #9 on the cable remote" instead of just saying .. the zoom button.

Thanks again!!!

What you're describing is usually the result of an improperly seated connector. With the power disconnected, open the tv and locate any connectors between the LCD screen and the driver circuit board. Unplug them, and reconnect it assuring it's properly and firmly seated. Be careful when handling these cables as they tend to be quite fragile... take your time.

This is a screen tab fault and in most cases will require the screen replacing

try cleaning T-CON Board to Lcd panel cable

Get a digital antena,If u using the signal over the air,rescan.If the signal is cable or other pay tv signal.Ur digital turner,it damage.

HI
SO IN THIS CASE YOUR LED TV SCREEN IS DEFECTIVE PLEASE REPLACE THE SCREEN
THANKS
M NASIR

i had the same problem and the only way i could solve it was to disconnect power from the tv, let it "reset" then it would be ok for a bit. the problem went away entirely when the cable company updated its software for its hd box. might be coincidence....

also, pre-update, the resolution wouldnt automatically set correctly. If I turned on the tv to a hi def station, it would set to 480 and only set to 1080 when i changed to a normal station then back to the hd. then it was fine. again, after the update from the cable company this went away.

I have a Scientific Atlanta cable box w/ Time Warner. I followed the instructions below for the cable box. Somehow it reset my picture and I can now read the ticker at the bottom of the screen and the different picture sizes seem to work properly. Good Luck.
http://newteevee.com/2007/12/15/six-steps-to-get-more-hd-from-your-scientific-atlanta-set-top-box/