Again, as I said in the orignal post....modle # is there....here is original post:
I have a Vizio M550NV S/n LAPPGSAL4000447, when I turn on the TV, there is no audio. Sometimes If simply leave the TV on, the sound will come on in 5 - 10 minutes. Most of the time I must power down the TV, then turn on again, and the audio is OK. On occasion I must power on/off 3 - 4 times to get audio.
Also, when I change channels, a loud popping occurs through the speakers.
I have tried all 4 steps below and still have this problem:
1) Reset, UNPLUG TV, hold down power button for 30 seconds, re plug TV.
2) go into the Help menu and select Clear Memory and fully reset the TV. Press the VIA button on the VIZIO remote. Select HDTV Settings and press OK. Go to Help and press OK. Select Clear Memory and press OK.
3) Press menu button on remote to get OSD (OR press in put button and do from THAT OSD), then, Press 2489, Setup, then go to “Clean storage”
When done it will say Storage has been cleaned …(manually turn of TV, press jag wheel in once), turn TV back on.
4) use a different HDMI cable.
I have not verified, but I believe this only occurs on my HDMI input from my satellite TV, (Dish network). I do not recall if this problems exists on my DVD HDMI input, it may happen there also, just do not remember.