A week ago I changed the model of my Samsung UE32B6000 to B7000 in the service menu to watch some movies from a USB memory, but I've changed a wrong value because my TV has losed sound quality (now it sounds metalic or like a tan) and I have to set very high volume values to hear it, before the change I usually set volume to 20-25 and now I have to set volume to 35-40.
I don't know what I did, so please if someone know how to fix it, help me!!
Searching in Google I read that updating the firmware could fix this problem, but I have the latest firmware available form Samsung (T-CHL5DEUC_2010.1) so I can't update it.
Please, help me!