Question about Vizio L32 32 in. LCD HDTV

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Vizio L32. When in DTV mode DTV Tuner function comes up as a blank blue screen. How can this be reset?

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  • bsoroos Sep 17, 2010

    After reading through the manual. I see that the only thing different from what I have been doing is connecting the antenna while the DTV is off. I'm now doing this but with the same results; a solid blue screen comes when I enter the channel tuning menu. I also assume that both of the digital antennas I've tried are working because I have used both of them successfully in the past. Any other thoughts on possible problems?


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Hi, this is not something that can be reset. this Blue Screen is displayed as a default screen, whenever there is NO signal at the Input. You need to make sure your input connections are all 100% OK. The blue screen is displayed because the set cannot detect any input signals at all, you need to check, your antenna, and connections to it. In fact it would be a good idea if possible to test this outlet to see if indeed you do have a signal to begin with.
Below is your service manual below that is your user manual, use the service manual to troubleshoot this issue, use the user manual to ensure all settings are correct. -

Posted on Sep 16, 2010

  • NotAvailable Sep 26, 2010

    I have a 2006 Vizio L37. When I turn it to DTV I get only a blue screen. This problem just started. Before whether I had an antenna hooked up or not the screen was black and it read "no signal" in the top left corner of the screen. I've solved this problem a few times by turning the TV on and off but that no longer works.

  • electronic & computer repair&  servicre

    This is because the problem that was intermittent before, has now gone "Hard On" as we say, the component has failed totally and this is the cause of there being no signal, as thats what that blue screen signifies, NO Input Signal, from either Tuner Or External. When the screen is black, that means it knows there is an input connected BUT there is NO actual signal on that input.

    It sounds as though either your Tuner/Input matrix and or switcher has faulted. This will have to be repaired.

    Often this can be a problem with one of the Power "Rails" to the Tuner and switching matrix, in any event, that's the first place to start troubleshooting, the Power Supply, as if this area isn't 100 A OK, nothing else can be!

    There is a link below for a service manual for your set. Copy paste this link into your browser to download it. Vizio L37 service manual


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Run a channel scan on the DTV and/or TV input depending on what one your not getting channels on. This will solve your issue.

Change the input on the unit to the DTV or TV input. Press the menu button on the remote. Navigate to the tuner DTV or TV tuner setup menu. Go down to auto search using the down arrow. go right when with auto search selected. This may take a few minutes but you should have all the channels back after the scan.

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$250 for the main tuner board and another hundred for labor.

I did find that there are some "like new" boards out there from otherwise damaged units. For instance a Big Box store damages a flat screen or exterior trim, the board is removed and tested.

The "like new" boards I found are about $150 with a 90 day warranty. The new board also has 90 day warranty.

The tech guy that posted here was correct. Thank you.

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Let me know what you find out, I have a similar problem. I can get the PIP screen to come up but it will not allow me to have it on an input that actually shows a picture - just blue screen.

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