I've just got a Harmony 600. I program it via my Mac with the 7.8.0 software, and my devices are a Samsung UE32D6530 TV, a Virgin V+ Scientific Atlanta 8300DVB cable box, a Panasonic DMR-EZ28EB-K DVD recorder, an NAD C3200BEE amp, and a Squeezebox 3 wi-fi music player.
I'm still having trouble using a sequence in my Watch TV activity that should mute the amp's and the TV's sound with one press of the 600's mute button.
Trouble is, the Watch TV activity starts fine ... but the mute button does nothing. Not a single device is muted, and certainly not the two I want.
So, I press help, which takes me through the "Is the TV on" etc list, asking me about the three devices and the various inputs. I click yes to each question, because they are indeed correct, after which ... hey presto, and without a mention of the mutes ... the mute sequence works when I now press the mute button.
But the problem happens every time I start the activity. Is there some way I can get this double-muting sequence to work right from the start of this activity?