I can view DVD movie on my Vizio 42" LCD but no TV, could it be my TV turner went bad?

42" Vizio TV flickering strobing easy way to repair VW42L ...

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42" Vizio TV flickering strobing easy way to repair VW42L HDTV10A LCD TV ... EASY How to Fix Samsung LCD TV Flashing Flickering Screen!Missing: vp422hdtv10a ‎snow

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Apr 15, 2009 - I have a vizio p42hdtv10A that just went into a black screen. .... I have a Vizio VP422 HDTV10A that will not stay on or show a picture. I removed ... Vizio vp422 hdtv10a
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If the problem is same with different input devices and you have ensured there are no loose contacts in power outlet, RC jack, cable and sockets, the TV needs servicing.

Manual here:
http://vizio.com/documents/downloads/hdtv/VL420M/254User_Manual.pdf

"MEDIA PORT - Insert a FAT/FAT32 formatted USB drive
to view pictures, listen to music, or watch movies."

Can use a USB stick or external hard drive.

I w having this same issue when watching a Blu-Ray disc. I found it to be dependent upon what picture mode the TV was set to. By this I mean certain picture modes would cause the TV to dim during dark scenes of a movie. Changing the picture mode helped a lot.

Replace the main board which is the one that has turner on it Part number should be 3642-0162-0395 Go to Encompass Electronics Parts website or Call 1-800-638-3328

If your DVD player supports HDMI or OPTICAL / DIGITAL audio then I would take a look at swapping to those type of connection first. This would help eliminate bad cords / connectors / electrical interference from other sources

Your TV has two hdmi inputs and optical so you have a choice

Real easy, get a RCA audio cable (red and white ends) that is long enough to go from the tv inputs to your receiver inputs. Plug one end into the audio out on the back of your tv, then plug other end into input on your receiver (tv, cd or vcr). Now everything going to tv will output to receiver also. You may have to go into the TV menu and under audio, set audio output to fixed. Then you can change the volume on your receiver which is best way to go.

**Advanced** If your TV and receiver has optical capability you can use an optical cable instead.

Good luck,

Check the cable connector. If it is OK then the turner has gone bad. Replace main board will fix it.

Replace the power supply will fix the problem. Is the Vizio LED light on?

I had the same problem. I could get an analog audio signal but no digitial signal. My problem was with the cable box setting. I have Cox Cable. With the Cable remote I went to settings/settings/Audio out and selected HDMI. Worked like a charm