The problem is that the tv timer is on which doesn't allow the tv to turn on. I use a remote control other than the sony one, and the remote control doesn't have a timer button on it. I can't turn my tv on now because I don't know how without the remote control.
You need to change your main board or if there is no led light in front of your tv then a power board
Nope sorry my friend the timer does not have a function to no let the TV set turn on, It only hhas a function to turn off the set. You have another problem with the TV set I bet you 100% Sometimes someone will use the timer funtion to have the TV set turn off and then at turn off or even turn on a componet fails and goes bad. there is no way a TV timer will prevent the TV set from turning on. there is most likly a problem in the TV sets power supply or the sweep power supply. Have it checked out by a pro and they will tell you the same thing. Good guess though, but it does not simply work that way, Sorry. Good Luck
Your RCA rear projection TV may not turn on from time to time for several reasons. First, check that the power cord is plugged into a working power outlet. Check that the outlet is receiving electricity by plugging a different device into the outlet. If the other device doesn't work, you may need to replace a fuse or reset a circuit breaker in your home.
If you tried using the remote control to turn on the TV, press the "Power" button on the front of the TV. You may have a problem with the remote control if the TV turns on.
If you tried using the front control panels and haven't tried the remote, press the "Power" button on the remote control. The television controls are blocked if the TV turns on with the remote. To unlock the controls, open the "Parental Control" menu and remove the check mark next to "Front Panel Block."
Finally, your TV may be performing a diagnostic check. These checks are used to find any errors in your TV. Wait a few minutes before trying to turn on the TV again.
You may find that your RCA TV turns off by itself on occasion. This is often because the "Sleep Timer" feature was enabled. This feature allows you to place a timer on the television that will turn it off after a specific amount of time has passed. The feature allows you to save on your energy bill and extend the life of your television.
If the "Sleep Timer" wasn't set, the television may have detected a power surge in your home and shut off automatically to protect the components of the television. Wait at least 30 seconds before turning the TV on again.
Finally, if you suspect the television is turning off for a reason other than a power surge, unplug the television and let it sit for at least 10 minutes. This will clear any errors in the television. After 10 minutes, plug the television back into the outlet and resume normal use.
A blank screen on an RCA rear projection television is usually caused by a loose connection or an incorrect setting. Check that the coaxial connection on the back of the television is secure or, if you're using an external device such as a DVD player, the video cables are secure. Press the "Ant/Cable" button to switch between tuners if you are watching television, or the "Input" button to switch between input channels if you're watching something from an external device.
The sleep timer allows your LCD TV to automatically turn OFF after a given
amount of time. You can set the sleep timer using your remote control or through
the onscreen display (OSD). 
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Somebody Help. I don't Marking for IC STR Power suppy and Transistor Horizontal. D something .....Please help us ,because.we lost this part.
Thank You !!!!
stanby /timer is on can not get tv to turn on
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