Vizio m470sl no power. What could be the problem?

That loud pop was a surface mounted "cap" capacitor blowing up. Look for a burnt spot on the circuit boards inside the TV cabinet, it will be very small so look carefully. They are called "Caps" for a reason.

Line Defects On Vizio TV Screens - Vizio TV Help

vizhdtv.com/line-defects-on-vizio-tv-screens/

Aug 26, 2015 - If you see a line on your TV screen it might be the result of several causes. Some might be simple to fix and others may actually require you to replace theTV. Pixels on a TVs display panel are organized in groups of straight vertical lines. ...Notice the line defect above is red but they can be white, green, ...

how to repair vizio lcd tv vertical lines then fail - YouTube

? 17:05
https://www.youtube.com/watch?v=YUKMl7_19gk
Jul 5, 2014 - Uploaded by bam6972
how to repair vizio lcd tv vertical lines then fail ... I do know quite a bit, not everything but I do know my fair share about tvs. this tv needed a new ...

TV Repair Help for Vertical & Horizontal Lines on Your TV ...

? 2:47
https://www.youtube.com/watch?v=b0sI7LB4cZE
Apr 25, 2014 - Uploaded by ShopJimmy.com
TV Repair help with troubleshooting lines on your TV Screen. ... I have Vizio M470SL. My TV has .... Why does my T.V. suck Don't buy Rca T.V..

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

That does sound like the most likely issue is you MAIN PCB. You will need your complete model/serial# then see the following web site:

https://www.encompassparts.com/model/VIZM470SL/_/_/VIZIO/M470SL/47-INCH_120HZ_EDGE_LIT_RAZOR_LED_LCD_HDTV

Sounds like your lamp or the power supply blew. If there is no sound either, it could be the power supply.

check your power board, most likely that's the part that is causing the problem.

problem is in the power supply.

regards,
daniel.

You need an Vizio authorized TV repair guy to check out the problem for you.
Solutiondoct

Hello SuziCanevaro,

This may have been the sound of electrolytic capacitors exploding. I would not suggest plugging the set back in until you can have it checked by a qualified TV technician. If you are skilled in Electronics and would like to work on this yourself, you will need:

The schematic diagram, a multimeter, a signal generator, an oscilloscope, and an isolation transformer.

I hope this helps,

Thank you,

Shuttle83

power supply.Definately will need to be replaced. Im actually looking for one to replace myself.TV repairs charge 1200 to repair.