Question about Vizio Televison & Video
I have a Vizio VU42L-FHDTV10A that won't power up by button or remote. I replaced the power supply board with no luck.No lights come on although I have power into the powerboard. How do I test the High Voltage Transformer? Or, could it be something else? If so, how can I test the other option as well?
It could be the main board. The main board controls the standby light on the front of the set. Check and verify that your 5vdc standby voltage is working. Next, I would check the "on" or "ps on" input on the power supply board. When you turn the set on (either my side buttons or remote) the main board should send a 3.3vdc signal into the "on" terminal on the power supply. This "on" signal from the main board turns on the other half of the power supply thus turning on your set. If you are not getting this signal from the main board, I would suspect the main board. To test your power supply, you can simply put a jumper from 5vdc to the "on" terminal on the power supply. Your 12vdc, and 24vdc power supplies should then become active.
Posted on Nov 01, 2012
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
The price range is 500-800 depending where you will get it, try Ebay and look for a non-working one with a good panel (screen), it does not matter why is not working as long as the panel is in good condition.
Posted on May 27, 2009
SOURCE: i have a vizio vu42l
There not need not be burn marks when components are shorted. And yes I do think its definitely a case of short in the power supply. I am 100% sure replacing it would resolve the problem.
Posted on Feb 16, 2011
Tips for a great answer:
Dec 02, 2017 | Vizio Televison & Video
Feb 14, 2016 | Vizio GV42L 42 in. LCD Television
Apr 28, 2012 | Televison & Video
Dec 21, 2011 | Vizio VU42L 42 in. LCD TV
Mar 06, 2011 | Vizio VU42L 42 in. LCD TV
Sep 22, 2010 | Vizio SV421XVT 42 in. LCD TV
Jun 06, 2010 | Vizio VU42L 42 in. LCD TV
May 16, 2009 | Televison & Video
Aug 11, 2008 | Televison & Video
May 19, 2018 | Vizio Televison & Video
240 people viewed this question
Usually answered in minutes!