Question about Vizio M420SL 42 in. HDTV

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Screen goes black but can still hear audio

While watching tv or dvd screen goes black after a few minutes, sometimes after a few seconds of turning on. I can still hear full audio but no picture. Changing the channel or switching inputs does not help. I have also had the tv unplugged overnight and still the same promblem.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: VIZIO TV Black screen. Cannot turn off TV without unplugging.

I had a similar problem after having a Vizio for 2 and a half years. I left the room for a minute, i came back and the screen went black. I didnt hear an arcing sound though. There was still power to the unit and you could see that the back light was working, just no picture, no sound, and you couldn't use any of the buttons. The only way to turn it off was to unplug it. It would then start up, with the Vizio logo going from orange to white, and then do the same thing all over, no pic or sound. I would check the ceramic fuse first on the board that gets power from the plug.

HOW I FIXED MINE: I ordered a new "main PCB" from tigerdirectparts.com (you can also use searspartsdirect.com). This is the circuit board with all of the inputs on it (hdmi, cable, etc.) I opened it up, disconnected the old one, put in a new one and now it works fine.I used both serial numbers on the board to search for it online. It cost me $144 to do it, but that's better than $450 for a new TV. My tv is the vx32l hdtv10a. I hope that helps.

Posted on Jan 22, 2010

  • 19 Answers

SOURCE: How to reset tv. Have sound but black screen

LCD's use a colorful crystal see through display which only visible when light is shining through it. if you have sound and no picture it's always a faulty PSU. Very easy to change out actually.

Posted on Mar 27, 2010

  • 2 Answers

SOURCE: Vizio flat screen tv screen goes all green (no

if you have comcast you can use your remote to change the tV program from cabke to DVD then change it back to cable. your image should come back.

Posted on Apr 24, 2010

  • 1 Answer

SOURCE: HAVE A VIZIO GV47L. NO

I received a VIZIO VA220E from my kids Christmas 2009 for my kitchen. Kitchin finished and TV wall mounted in April 2010. About 6 weeks ago I was not able to turn on in AM after watching the night before. BLACK SCREEN / NO AUDIO.
Now what?

Posted on Apr 11, 2011

  • 1 Answer

SOURCE: tv wont go past the start screen

I have the exact same problem and am seeking a solution too ... it won't boot past the Vizio logo on the screen and the remote and side buttons won't work :(

Posted on Apr 18, 2012

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I have a 50" Samsung tv. The tv turns on and the screen comes on, then within 1 minute the screen goes black. I can still hear sound.


Samsung HL-R5087W TV screen goes blank -tv/sound on - Forums ...

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CNETJun 11, 2015 - About a month ago, the at various times the tv screen would go blankeven though the tv ... Try turning off the cable/sat box when the happens. ... In reply to: Samsung SP50L7HX DLP TV linked to Sky HD box - same problem .... on it comesback to normal. however, once it went off again (Black Screen) after only 2-3 minutes. ln-t4069f picture problem lcd warmup - Forums - CNET
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Philips 52'' hdtv 1080p while watching it looses picture but still has sound


The back light inveterate board and CCFL lamps should be checked. Check and replace the faulty component. Back light inverter can only be replaced as card basis.

Jan 30, 2013 | Philips 52 In. LCD HDTV

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I have a 2 year old LG LCD TV (model 42LG60) and I am having problems with the screen. I turn it on and everything is fine for a few minutes and then the screen goes to red or green lines that are fuzzy....


Not really a solution, sorry, but I've got the very same problem. I haven't noticed the time before tv faults, but nontheless, it greenscreens or like in your case, redscreens as well. I've been told to open the back, which I did to check the status of the capicitors, which I've done. But, the capacitors "seem" fine. No bulging or popped tops. So, I'm at a stand still...not sure what to do at this point. If someone gives you solution, I sure would appreciate your forwarding it on to me. Thanks. Robert

Oct 23, 2011 | LG Scarlet 42LG6000 42 in. HD-Ready LCD TV

1 Answer

Picture goes black but hear the sound


this is the problem related to display of ur TV screen...please contact the service centre...plz dont try to repair it urself..

Apr 30, 2009 | Sharp Aquos LC-C3234U 32 in. LCD TV

1 Answer

TV screen goes black but tv is on. But will stay on sometimes.


i have a 2000ish 32 inch trinitron Wega and i have had the EXACT same problems as you have, except mine was blacking out more and more frequently, but yes if u changes the channel or hit return onto the same channel you're watchin the picture wil come back, but not very long, about the longest it'll show a steady picture is 1/2 hr, but it's usualy going black within every 10-15 mins or so.

I took it to a Sony approved/recommened repair shop and aftet having a look i was told it would cost $200 cd including taxes to replace a 'vacuum tube' or something like that, i wish i could be more specific anout the part. I'm still considering whether or not to go through with the repair. I might just buy a working/used newer Tube Flascreen with HD for another couple hundred dollars. If there was a newer 2003+ 32 or 36" Sony that has a good track record I would love to hear suggestions. I don' trust flat panels, way too mny horror stories, and for every 1 i hear about there's probably 10-20 more.I'll give them another 5 years or so to get their acts together.

On the other had, if i do decide to get my 32" wega fixed i will post the results and the exact pt numbers of the pts used i the repair. Your problem is exactly the same as mine, to the letter. I'm a mechanic by trade, but i have a good feeling they're not going to give me correct pt # until i have payed them to fix it. Or else i'd order the part and install it myself.

Good Luck,
Aaron


Jan 24, 2009 | Sony Televison & Video

1 Answer

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I have a panasonic TH-42PX60U plasma TV. When I watch TV programing I have no problems, or with the DVD input. But if I switch to another input, be it video game (PS2) or vcr the screen sometimes goes black and the red power lcd light next to the power switch flashes. Holding the power button in for a few seconds will shut down the tv. Then I can turn it back on and it may operate normally again for a undetermined period of time, before the screen goes black again. This never happened when new. The tv is about 1 year old. Any ideas on this problem? Thanks Ernie

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In electronics dust has nothing to do. cleaning will not solve your problem your problem is due to trouble in vertical section. mostly it is due to electrolytic capacitor in vertical section is defective.it is common problem. also check supply to vertical section. "THE SCREEN SHRINKS TOWARDS THE TOP OF THE SCREEN FOR A FEW SECONDS BEFORE THE PICTURE TURNS UPSIDEDOWN THEN TURNS BLACK." is called fold over. regards thanks

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Hello Robert, the picture tube on your TV set is exausted. Please contact your nearest Authorized Sony Service for further help/advice. After all, Sony is a good choice. The next TV set you buy could be one of Sony-s Bravia LCD. Kind regards, Arpad

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