Apex AT2702 We have sound, but no picture. Just black screen. Thanks

If this happens no matter which input is used (tuner, A/V input rear, A/V input front, S-Video input), then you have a problem with the display itself.

If you get a picture with some inputs but not with others, then you have a connection problem of some kind.

Try plugging a camcorder or DVD player into an A/V input, or a computer into the S-Video input. Do you get a picture with any of those?

I think there is an option called music mode ....
so may be it is running in music mode check it....
if not then may be the tube is gone or may be some capacitor is burnt out or may be some wire connecting to display circuit board is in mis contact .. ....
just take your tv to technician ....
the technician will recharge the tube or he will give other solution for it ....
if you are good at opening then just open it and have a check whether any capacitor is burnt out...
if you are not good at opening or if you are afraid or if you dont have any idea then just take the tv to technician ...
any way it doesnt cost too much ...