I cannot turn TV off from remote. It makes the picture go out but red light is still on. Have to unplug the TV to turn it all the way off.

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Tries take both remotes controls pushes all the funsctions butons one by one on the front of a turn on Digital Camera,see if u will able to see all the INFER RED signal white light will flashing on the Digital Camera viewing screen.To make sure both the remotes are working and all the buttons are have INFER RED light signal out.Tries pushes all the tv manual buttons on the tv side too see if it is funsctioning too.If all these work testing work,than take some rubbing alchahol put on a rag clean the INFER RED sensors signals on the tv an the cable box by the tv power light LED indications lights.Tries these steps,make sure tv manual control tv side panel work and both remotes works and clean both INFER RED sensors on cable box and tv make it work better.Unplug the cable box for an hour for it to reboot and updating it softwares.Replug the cable box and now tries the tv remote or cable remote again,should functions now.

unplug the tv, wait 5 mins plug it back in, and without using the remote, press the tv on button. see if its ok.

Did anyone find out the solution for this??????? I have the exact same problem with my LG 32 LCD. I only had it for a year and a half, and the green light blinks a few times and it shows no picture. Not even a red light when the tv is off. The same thing happened a couple weeks ago and by some miracle it started working again.

its not hard to replace the bulb and you can go to any tv shop and have them order it.youll need to give them the make and model number off the back of the tv so they know what to order

A reset won't fix this. The standby light should be blinking a repeated count with a 3 second pause inbetween. Post that count here. That will indicate the circuit/condition that is preventing the set from turning on.

Thanks,
Dan

how many times does the LED blink ? Thats a error code.

TV worked FINE for the past 2 yrs---this morning we woke up and the screen is totally BLACK! No sound..nothing. REmote doesn't do anything to the TV. Red light says ON unless we unplug it. Remote won't turn off the TV.
Any advise? Picture tube??
Worked great w/out any problems until we woke up today!

Thanks,
Tina

same as ak_medic

your problem is likely to be in horizontal section of tv. please take the help of skilled tech. it is not a major problem but as you know that it is a high voltage device.