Remote Control On/Off Button

If it once was working, I am thinking that there are two possibilities:

If you once turned off the TV by the power button it may not be able to be turned on by the remote IR, starting a vicious cycle. Try turning it off with the remote. It does not go "off" just to sleep.

A second possibility is that the U=verse remote somehow lost the power programming. to reprogram - att/ok - 977 - att - TV - ENTER (bottom right).

Try the first possibility first. If it does not work, push the TV button on the u-verse remote & try the power button. If that works do the second step.

Always do any "tries" with the TV on - going for off to be sure that it is not blocking the IR on/off when the TV mounted switch is a hard turn off.

More possibilities -

IR to TV coud be too weak due to old batteries. Does TV power off when TV mode button is pressed first?

You placed something in front of TV IR sensor. Most likely would also affect volume.

Hello! Thanks for your reply. Just tried one of the steps you suggested. With the ‘TV’ power button ‘ON’ and then using the ‘U-verse Remote Control’ power button to switch off the ‘TV’. This changes the picture to ‘Blue Screen’ stating “Press OK to watch TV” with a balloon for ‘U-verse Tips’ Pressing the ‘OK’ button reverts the picture back to normal viewing. The ‘TV’ does not go into a ‘Sleep Mode’.

OK, The TV is ready to work.

If you have the TV remote & it works, the TV IR sensor is not blocked.

& Ypu have fresh batteries in the remote.

Try pressing the TV button on the U-verse remote. Does the volume control work? Does the power button work? If not, you need to reprogram the TV.

IF it does work, you need to reprogram the power (977) sequence.

Hello! Yes, the ‘TV’ works. Have a ‘TV’ remote from (manufacture) and it had old leaking batteries that are now replaced with fresh new ‘Batteries’. But does not work the ‘TV’. The ‘TV IR’ sensor is not blocked. Good ‘Batteries’ are installed in the ‘U-verse Remote Control’. Cannot control the ‘TV’ with the (manufacture’s) remote control. Cannot adjust the ‘Volume’ using the ‘U-verse Remote Control’ either. Can only switch the ‘TV’ On and Off using the buttons directly on the ‘TV’. Also, can only adjust the ‘Volume’ UP and Down using the buttons directly on the ‘TV’ set. The ‘Power’ button on the ‘U-verse Remote Control’ switches On the ‘Receiver’ only. Selecting the ‘TV’ button at the top of the ‘U-verse Remote Control’ then selecting the ‘Volume’ or ‘Power’ buttons has no effect upon the ‘TV’ to switch it On or Off.

It does sound like either the U-verse remote or the TV IR receiver circuit went south. You could go for another remote or tery to borrow one from someone to see if it is the TV.

Another thought that I keep forgetting is look at the remote output through a digital camera to see if it is transmitting when you press the button.

If it does control the STB the remote must still be working, but may not be programmed correctly.

Hello! Thanks for your reply. Have not tried to reprogram the ‘U-verse Remote Control’ yet. I get that step for troubleshooting remote problem’(s). As far as the ‘TV IR’ receiver circuit, are you referring to the ‘U-verse’ receiver that connects to the ‘TV’? Or is it a circuit within the ‘TV’ set itself? Also, using a “Digital Camera” you suggested to troubleshoot the “remote output”? Could that process potentially damage the camera? And what would the “Digital Camera” show anyway if anything? Thanks.

No, it shouldn't damge the camera. The only remote I've tested this way gave off a blue tinged light. Be aware though that some digital cameras won't display IR.

Charles Junior - Every device that has an IR remote has a built in light sensor and electronic circuit to process what it senses - i.e. an IR receiver. In your case we are talking about the TV, so it is in the TV itself.

I agree with rearnold864 on the rest. It is not conclusive, but can show if the rmote is lighting up.

Hello, aviewer. Thanks for your reply. Now to set thing straight in mind, this troubleshooting technique would be used for the ‘Manufacture’s’ remote control? For example the remote that came with the ‘TV’ set? And would be something totally different for troubleshooting the ‘U-verse Remote Control’ that came with the ‘U-verse Receiver’? Thanks.

I don't think so. It is all the same. A remote shoots IR light. A TV or STB(receiver) device receives & processes the IR. The extra complication is when the remote has special programing. Is thatin place?

It is always helpful when another remote is available to test the reception.

My understanding of your case is that you do not have a second remote available (TV or STB).

The U-verse remote is not controlling the power on the TV.

Is the U-verse remote sending any IR? Is it sending the right IR? Is it not sending because the power sequence is not programmed? Is the TV receiving & processing the IR?

There need to be steps to figure out which it is. The best way to do that is to substitute a replacement that is known to work.