[Samanthas]

Hi
The TV was left on standby for one day and when we went to turn it back on, there was no picture but there was sound.
When we first got TV, on the remote control we put some tape over the channel up and down button because if you accidentally pressed them, it would turn off the TV on standby mode. Then you would have to press them again to get TV back which the picture would be all snowy effect then you would have to turn off TV at switch on TV and then turn back on again and it would be fine. However, now if you press these buttons you can hear it move through the channels as they should and the red standby button turns off the TV (which it did not do before)in standby mode and then you have to press any other button on remote to bring TV back on and then turn off at switch on TV and turn back on but still no picture.
Do you know what the problem may be so I can determine if I should get repaired or not?
Many Thanks for your help.