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Vizio TV Model M550SV. My tv has picture but no sound. I have reset cable box and changed to different input. Also the Netflix app on tv has no sound either. DVD player also has no sound thru the tv

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  • Vizio Master
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Check whether the audio is muted by accidental press at remote control button. Enter its sound menu, and check it. If muted, as you know there will be no audio output. If not muted, Check the speaker/s. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis. If you wish to get some details; check the site linked here. Pull up older posts. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. http://electro-medical.blogspot.com/

Posted on Dec 28, 2016

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Sharp tv won't display cable picture (it only shows fuzz) but the netflix and DVD both work. The cable says no input service available. I am able to change the channel on the cable box, but on the tv


Your cable box might not be sending signal out to the tv. Would have to call service provider to have them test your box. Or, you can try unplugging your cable box, and then plugging it back in. Make sure all connections are secure and settings on your tv are accurate. 11_13_2013_3_31_52_pm.png

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Before you go to any more trouble troubleshooting potential hardware and/or connection issues, look at this page of reviews on Dell's site, taking special care to read 'Review 8' by an owner named 'Milwsport'.

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The Netflix app on my vizio svt422xvt (one of the Vizios with VIA internet & wifi built-in) won't connect to Netflix. It directs me to the Netflix website for help, but Netflix help tells me to...


I had the same problem with my Vizio XVT473SV. I couldn't find the Netflix Activation Code. When I clicked on the Netflix App, the TV would ask me if I wanted to connect to Netflix, then it would ask me if I was a Netflix member. After clicking yes to both, it would tell me it couldn't connect to the Netflix server, check with Netflix.com/tvhelp. After a couple hours of troubleshooting, the solution was......your first use of the Netflix App has to be via the Ethernet Port/Cable. This will give you a screen with the Activation Code, after you activate the code in your Netflix account, you can go back to using WiFi on your Vizio TV to connect to Netflix. Step by step instructions are...
1) Exit the Vizio Netflix App.
2) Physically connect an Ethernet cable to your broadband (just temporarily)
3) Check to make sure the Vizio is using the Ethernet port and not your WiFi (Apps Button - HDTV Settings - Network...may have to reboot the TV to get Ethernet port connection)
4) Start the Vizio Netflix App
5) Click OK to start the Netflix App
6) You should now see a different screen that gives you the Netflix Activation Code.
7) On your Computer, Login in to Netflix,
8) Click on "Your Account & Help" link on upper right corner
9) Scroll down to Watching Instantly on your TV or Computer section
10) Click on Activate a Netflix Ready Device
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13) Exit the Netflix App, unplug the Ethernet cable, Turn Off your Vizio TV.
14) After 20 seconds or so (remember the TV is software driven), turn the TV back on and your WiFi should connect again.
15) Use your Netflix App and this time it should automatically connect via WiFi
note: just make sure that your wireless DSL/Cable Modem or Wireless Router is not blocking your WiFi connection request from the Vizio. You can check the connection status in the modem/router or in the Vizio in the HDTV Settings - Network.

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1 Answer

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Can you tell me which Cable box you are using?Which model/region?

The possibility is that the HDCP handshake could not have happend correctly and hence the issue. Try to connect to different HDMI input of TV from Cable box. If possible change the resolution of cable box and check video

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