Samsung LN32B450 tv remote not working?

The red power button is flickering. The remote will not work. The side buttons on tv are not working properly. The volume is stuck at one level. Press the side volume button and the tv switches source and says no signal or weak signal, I change the source and it makes the tv work as far as picture but still no volume control or ability to change channels. If you press the side buttons with it on it goes to no picture and says weak signal.