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Any suggestions on how to fix our vizio flat screen?

The tv screen barely goes on, no sound out of the speakers, no picture. We bought a main board to replace. it was refurbished, but tested okay. the back lights work. any ideas what I can try next? we still don't have a picture or sound

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

ginko
  • 19396 Answers

SOURCE: 42" Vizio - no picture no sound

If the TV goes in standby, then it is in protection mode.

Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
connected.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

Posted on May 04, 2009

toddthetvmd
  • 101 Answers

SOURCE: i have picture but no sound on my 42 inch vizio

If you received a remanufactured board it might be defective,Or did you forget to hook back up the speakers? Sounds dumb but happens alot. Speaker wires get in the way,we disconnect them to look at a board or replace one.Often gets over looked.But I have received several defective boards.Hope this helps. Toddthetvmd

Posted on Oct 26, 2009

Beelz
  • 666 Answers

SOURCE: vizio p50hdtv10a. Tv has sound

sounds like you needed to replace your video fuse before anything normally if you have video but no sound its an audio fuse and vica versa if for some reason both were out I would say your in need of a new power supply I would suggest replacing the fuse and if it still does not work contacting a service tech to run a diagnostic to see what exact part or maintenance you need

Robb

Posted on Nov 07, 2010

  • 2 Answers

SOURCE: Vizio refurbished 47 Inch flat screen TV, Model E470VL. After a power outage, the tv comes on to a seemingly test pattern screen, but will not boot beyond that. There is no sound. Sometimes the boo

Sounds like you had a high voltage power surge just before going out
Are u using a high grade reference center or surge stage 2 or 3?

Posted on Nov 28, 2011

vinceisaac
  • 2432 Answers

SOURCE: Samsung TV goes Black but keeps sound

you will need to check weather the 24vdc supply for the inverter board is good no drop voltage. if no supply check the power supply board. then you should check if their is a inv_on signal at the power inverter board around 3v-4.4vdc . if goes out during power on tried to disconnect the supply going to the inverter board to ensure if their is a shorted parts in the inverter board. if the inverter_on signal also goes out even with out inverter board connected that was mean you have problem in the processor board.

Posted on Nov 02, 2012

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1 Answer

Vizio LCD TV has No picture or sound


Fault to the main power supply regulator section. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

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1 Answer

To fix no video Vizio E470i-A0 TV


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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1 Answer

No picture or sound


Its the main board 90% of the time when a vizio has that symptom.

Jan 10, 2013 | Vizio 39" E390VL 1080p LCD HDTV

2 Answers

No picture no sound just replaced the power supply and still nothing is it the main board


no if the tv turns on with the remote or power switch that means you have the 5 volt standby for the main board there could be two other reason why you dont have a picture or sound the y-sustain board buffers or logic board you will need a tech to see which on of these boards are out 9 out of 10 its usually the y-sustain board with the vizio

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