Question about Vizio L32 32 in. LCD HDTV

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Vizio L32 HDTV10A "Display / Sound / Mute / Volume Problems"

I have 4 peaces of Vizio L32 HDTV10A and all is giving the following problems.... 1 - NO Display but hearing Sound 2 - NO Sound but seeing Display 3 - When mute the sound, the audio is not muted 4 - When Volume is ON, there is NO Sound 5 - The Sound is at Full hears volume, but the volume control is on 0 volume level or to it's lowest volume level and still hearing sound loud 6 - At random times the TV wil turn OFF or the LED Power light change to Amber Color 7 - some times the TV will not Display and No Sound, but the Power LED will stay at Green What I tried: 1 - I open the TV and troubleshoot until the HIGHT VOLTAGE INVERTER for the Screen Lights, the brown wire, when the screen don't light up, the brown wire reads at 3.2Volts, it seem as the protection is ON! if you put down the 3.2Volts to ground, the Light will flash on for a second, more or less the brown wire voltage may have to be at a set voltage to be ON! also for the sound I still haven't reach that area as yet! This TV look as it have a formware or some malfunction to it's main IC due to the above problems with all 4 TV's... please do email me with any help....thanks RandyXi

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6 Suggested Answers

  • 4 Answers

SOURCE: only vizio light come on then nothing. have to unplug to turn off

there a problem on power side.. chage the ic and the resistor going to ic and check also the signal diode.

Posted on Jan 03, 2009

  • 1 Answer

SOURCE: only vizio light on

RJW34 I have a 37" Viizio LCD that has a similar problem. I power it up and I get a lit screen but it's blank. No controls work except power on and off.

Posted on Feb 20, 2009

  • 73 Answers

SOURCE: vizio p42 type sp42a nov 2004 hd tv

The sp42a is a plasma tv not an lcd. check the psb voltages first then move onto the ymain and buffers.

Posted on Aug 25, 2009

  • 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 (you can also use 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

SOURCE: TV looses picture and sound. Will not turn back on -
Above is a training manual, this should help you find and fix the problem if you wish to DIY. If you DO, decide to DIY, you MUST MUST get a Service Manual, for your exact make & model. it will be similar to the Training manual, but explicitly for your set. I do not recommend it however.In my professional opinion, you should contact Vizio and ask for an approved local service center, then, get a "Quote" for repair.
With faults such as this, it is important to leave them disconnected from the wall, as it is entirely possible, for a faulty, TV, to cause a fire, an explosion, or both. Anytime one hears any sort of "pop" similar or not, is grave cause for concern, as usually this means some sort of component failure, in a high voltage area.

Posted on Apr 29, 2010

  • 19396 Answers

SOURCE: Vizio L32 HDTV10A is dead.


If the TV is completely dead, then it is either power cord, wall socket, or the power supply board inside the TV.

The wall socket is easily tested connecting a different appliance.

Check if the power cord if fused. If it is fused, then replace the fuse. The power cord is tested using a multimeter set on impedance to read if there is continuity between prongs and contact to PSU inside the TV (or connector if power cord is not soldered).

The PSU is tested checking the zener and the resistors in the AC stage of the circuit, then visually checking capacitors and testing components in the PSU. Often it is possible to spot a burnt area or a bulged capacitor at a glance.

Here the PSU:

Call the seller to ensure that the PSU is the right part for your model. The old PSU must be tested before replacement.



Posted on Jan 13, 2011

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