Thanks everyone for your help and suggestions. I checked again this morning and now the sound on channel 6 is back. When I look in the tools menu for audio, it now shows two options which were not there yesterday. English and another version of English. Some channels have options for Spanish and other options. I had sent an email to Global pointing out the problem. I don't know if they even got it but it certainly seems like they changed something at their end. Major Tom, I don't know for certain about any regulations in Canada regarding volume rules on broadcasting. I know there is a feature on my TV which you can choose to use called volume levelling which basically acts as a compressor and levels out the volume level. But, as far as I know if your TV doesn't have such a feature, you're out of luck.