Question about Vizio E420VT 42 Class Razor LED HDTV
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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
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
Does LCD screen backlight come on? If so proceed....
USE:CAUTION WHEN DOING THIS....
Try this if repairing yourself...find power supply, small board with no cover over it...check voltages on output pins/plug/connectors (white plugs) three in a row...
1 Plug has 24Volt supply..1 has 12Volt supply and 1 has 5Volt supply when read to ground (screw that holds board in) if you have these voltages it's a safe bet it's the main control board...I just replaced mine and it fixed a problem like yours.
Posted on Sep 02, 2009
if there is entirely no backlight then yes, however if you just dont have a picture and just a blue screen then it is not the backlight it is the inverters, replace both is recommended.
Posted on Jan 25, 2011
Tips for a great answer:
May 10, 2016 | Vizio E701i-A3
Sep 03, 2014 | Vizio E420VT 42 Class Razor LED HDTV
Oct 20, 2013 | Vizio E420VT 42 Class Razor LED HDTV
Oct 22, 2011 | Televison & Video
Aug 07, 2011 | Vizio VX37L Television
Feb 04, 2011 | Vizio VO47L 47 in. LCD TV
Sep 26, 2009 | Vizio P50HDTV10A 50 in. Plasma HDTV
Jul 12, 2012 | Vizio E420VT 42 Class Razor LED HDTV
93 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: