This week we installed a new Vizio M50-D1 UHDTV. It replaced an aged Sharp Aquos, connected to our Roamio Pro. The M Series doesn't have a tuner. Further, the full-function remote control is actually an Android tablet. There's a small, limited-function remote control that provides control of volume, mute, input, etc. It seems to be an RF remote, like the Tivo remote. When I setup the Vizio TV at first I went through the process of programming the Tivo remote normally. There are only three codes offered for Vizio. One appeared to work for power, volume & mute...so I thought all was well. Later that day the tivo remote not longer had control of power, volume & mute. I tried to set the codes again, and this time none of them worked. I tried repeatedly. Nothing worked. The next day I tried again. This time one of the codes worked for power and volume...but not mute. This is where we stand. Does anyone have any tips for getting power. volume and mute control of a Vizo M50-D1? If we can get the basic working via the Tivo remote, we'll never need to use the Android tablet, which is way too complicated for for mere mortals/spouses.