Question about Vizio P2 42 in. HD-Ready Plasma Television

1 Answer

Audio, but no picture

Hello,
I have a Vizio 42 in. Plasma.
Symptoms: While watching TV I heard a click (same click when tv turns on or off - is this relay?) and picture went black. Still have sound and ability to change channels. Can not see menus. When I turn tv on or off, if tv has remained plugged in I hear no usual click, but I will hear audio of tv program. If I unplug tv each time after I turn it off, then when I turn it on I hear initial "turn on click", then several seconds later I hear a 2nd click, which I think is the picture turning off again, then I hear audio of program and can turn chanels. (What I have now is a large expensive radio). After being on, when I turn it off and on again I hear no clicks, unless, as mentioned, I unplug it, then plug it back in.

What I have done so far: I took off the back and checked the fuses on the circuit boards first. There was one bad fuse on the y-sus board. I replaced that fuse and continued to have all of the same symptoms.

Further symptoms. I unplugged the y-sus board, next to the fuses where it seems that the power enters the board. Then I again turned the tv on and off. When I did thisthe tv seemed to act normally - I heard the "turn on click", it did not click a couple of seconds afterwards, and I heard the "turn off click" when I turned it off. I could turn it on and off, heard the clicks at the appropriate times and did not need to unplug it. In other words, when the y-sus board was unplugged, It seemed to operate fine except there was no picture.

I got this same result when the y-sus board was plugged in, but with one of the fuses removed.

There are three fuses on the y-sus board. Two are easily replacable, one is very small and soldered in place. I can not remember which of the two replacable fuses was blown, but I will look when I get home and add that info if it is impotant.

I was thinking that maybe there is a problem with the y-sus board that causes the picture to turn off shortly after being turned on even though I think everything else continues to function properly. I know the y-sus board is connected to other components, so maybe the problem is further down the line, maybe one of those tall thin board on the edge of the tv. I don't know where to go from here. I could try replacing boards one at a time, but that will probably cost more than the tv. I would prefer to replace a component on one of the boards if I could isolate the faulty component. Or replace the board with the faulty component if I could isolate that board.

Are there more tests that I can do to narrow down the problem? Is there enough information here to make any suggestions? Is it likely that the blown fuse is in the same circuit as the faulty component? If so are there schematics to trace this circuit. I could probably learn how to test the components of the board with the meter I have if that would be useful.

Ok, enough questions! Please let me know if you can help, and thank you very much.

Posted by on

  • gill71 Jan 09, 2009

    Thank you very much for responding petraman7. I tested the fuses with a meter to make sure that they were not burned out. Is that the same as testing for continuity, or does that include something more? One fuse was burned out (on the y-sus board). That fuse was one that is removeable and easily replacable (not the one soldered to the board. I did replace it but still had the same symptoms.



    If the problem is with the power supply for the backlight for the screen, can you tell me how to locate and test this?



    Again, thank you for your help with this.

  • Scott Frye
    Scott Frye May 11, 2010

    Hi...
    Is there a way your can check all those fuses for continuity?
    If theyre all good, it's most likely the power supply for the backlight for the screen


×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,175 Answers

Not having the electrical diagrams makes that hard.
I would say that finding a good tech with parts access is your best bet.
You've spent a good chuck-o-change on it.

Posted on Jan 09, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Snow on screen with no picture.loud noise on audio


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

? 2:49
https://www.youtube.com/watch?v=Qba7_YHnXwM
Dec 2, 2013 - Uploaded by ozzysslayer
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

Vizio Replacement Boards - ecoustics.com

www.ecoustics.com > ... > Plasma & LCD TV Forum
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
Dec 20, 2011
Plasma & LCD TV Forum
May 13, 2011
More results from www.ecoustics.com

Dec 30, 2015 | Vizio VP422HDTV10A 42 inch 720p LCD HDTV

1 Answer

My Vizio p50hdtv herd spark, and TV went black, no picture no sound


Check and replace the main power regulator board as card basis. It has damaged.

Oct 11, 2012 | Vizio P50HDTV10A 50 in. Plasma HDTV

1 Answer

No picture but have sound


That click might have originated in 2 places: either it was the main relay disconnecting or it was the sound of a capacitor popping. Both are very severe problems - they signal that the power source of your tv has just failed.
Fixing it is a job for someone with electronics experience, if you're not one then call a repairman.

Jul 26, 2010 | RCA P42WHD33 42 in. Plasma HDTV

2 Answers

42 inch LG Plasma TV - Lost picture


This is almost certainly the device that sends electricity to the the plasma in the panel after failing. Bring to your local repair shop and expect to pay 300-400 parts and 100-200 labour.

Cheers,
Stephen

Apr 28, 2009 | LG 50PC1DRA 50 in. Plasma Television

1 Answer

Vizio P42HDe Plasma TV - Audio, but no picture


check the backlight inverter and the Y-sus board the one to your left. if those are fine check the bottom right buffer board

Mar 03, 2009 | Vizio P42HD Television

2 Answers

42 inch LG Plasma TV - Lost picture


Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

Feb 24, 2009 | LG 42LC3R 42 in. LCD TV

1 Answer

42 inch LG Plasma TV - Lost picture


ysus pcb that supplies voltage to the panel is faulty

Dec 14, 2007 | LG 42PX4DV 42 in. EDTV-Ready Plasma...

1 Answer

42 inch LG Plasma TV - Lost picture


sounds like it may be a software upgrade

Oct 16, 2007 | LG 50PX4DR 50 in. Plasma TV

3 Answers

Vizio GV42L LCD TV screen black when turn TV on first time


If you are using a set top box this might be caused by turnig the box on at the same tie as you turn the tv on or slightly after you turn the tv on.  If you are using compnent or HDMI inputs the set needs to see the signal as it is turned on to know what formt the signal is in. 

Oct 15, 2007 | Vizio P2 42 in. HD-Ready Plasma Television

Not finding what you are looking for?
Vizio P2 42 in. HD-Ready Plasma Television Logo

227 people viewed this question

Ask a Question

Usually answered in minutes!

Top Vizio Flat Panel Televisions Experts

The Knight
The Knight

Level 3 Expert

68223 Answers

Dave Naylor
Dave Naylor

Level 3 Expert

834 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

Are you a Vizio Flat Panel Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...