No sound have no sound on certain channels

Do a factory reset to this set. The Secondary Audio Program [SAP] to all channels will be cleared. Refer its user manual for details.

could be a faulty Directv box

Hi leelee, some cable and air signal channels have a separate audio program in the signal(commonly known as SAP) it may be that the SAP is activated or turned ON in your TV. This no sound condition only shows up on those channels that have the provision for it, but the signal is not being transmitted, that's why you have no sound on those channels. You will have to look for the sound key on your remote control and deactivated from there, or you might have to actually select the menu and scroll down to audio features, it is sure that you will find the SAP feature turned on. Good Luck

If you are using an antenna to recieve digital channels, if the signal strength is low on certain channels the sound will not be tuned in. Try adjusting the antenna. If it is cable there may be a problem with the cable run.

so is this sound on the tv or a sound system

You need to auto program the TV. this is done in the menu. If you are using cable you should make sure that you select CATV prior to auto programming

when your radio is on a certain channel the only thing it does is try to pick up that certain channel. say you go threw a tunnel or around the side of a hill. or in a residential neiborhood. the radio has a lot of interference from other things trying to pick up the same signal. there is nothing you can turn off or anything. as long as your getting a good sound on a certain channel leave it there,, when it don't pick up so good your loosing your signal and need to find a station that is closer to were you are. good-luck ray

all of the channel are resonding to the test. but you cant notice it bec 5.1 speakers, each channel are designed to respond to a certain frequecies.  the L/R channel your talking about have the mid-range frequecies so it responds clearly compared to other channels...

 

hope that helps...

as no sound on certain channels it means no problem in your tv though it is old. the problem is in transmission line from where you get prog. it can be adjudted manually by vol.control if low sound is there at certain channels. you can also reset once.