I lost my instructions for hooking my sound bar up to my new tv I ahd it hooked up to the last one and it worked now no sound and when I raise the volume it doesnt do a thing I programmed it to with m

Some sound bars have a seperate power cord, did you plug it in. Also, the source for the sound, are you using the audio outputs and not the audio inputs. They are all the same color (red and white) so you may have plugged in the wrong ones. If the sound bar is getting power, say a green led and the source for it is the tvs audio ouput jacks you might have to see if there is a seperate remote for the sound bar and raise the volume. Lastly the tvs audio output might have a seperate setting, it could be fixed or variable. Fixed will only change volume with the sound bar remote. In variable you will be able to change the volume with the tv remote but first you have to raise the sound bar level. Hope this helps in some way.