No sound from rear speakers of Bose V20

I have the same problem, but w/ the video and the audio, not only sound.

maybe bose v20 not support or u try sett ur tv

Yes, very easy and cheap if you get it from the right place. Fiber Optic going from the output of the device to the input of the receiver. If your lucky enough to have an input/output fiberoptic in your tv, run the fiber from the device to the tv input, fiber the output of the tv to the receiver so not only are you getting the device full surround sound, but you'll also get better TV surround sound for those that are made with Dolby pro logic II sound. (pretty much all the newer movies and shows)

I had the same problem, and called Bose tech support. They put me on track to the solution. The code you need is under AUX, Music Player, Apple where you probably looked already. The secret is that you need to "unpair" the apple remote first. If I remeber right, in apple TV you go to settings, general, remotes and unpair your remote. It still works, but is no longer the only remote that works.
Gerry

It was determined that more than one code turns the TV on and off, but you have to keep trying codes until you find the code that allows the Bose remote to control all of the TV functions. Thanks.

look at http://www.remotecentral.com/cgi-bin/mboard/rc-harmony/thread.cgi?6343

The problem turned out to be the TV itself. Somehow all the a/v and component cable inputs on the back of the TV got disabled. After finding then consulting the TV manual online (the TV is about 8 years old), we found there was a way to reset the TV to its original factory settings. Voila, the a/v and component cable inputs were enabled again, and everything worked correctly afterwards.