Question about Vizio VX37L Television

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Vizio has no power want to check fuse

Vizio vx37l worked then all power was lost and will not turn on at all,
i want to try checking a fuse but do not know where to begin, i did not pay for this tv and am trying to trouble shoot any simple fixes first before i decide to take to a repair place or not.

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Remove back, only exposed board there is PS, look where blue/brown AC wire plugs into it, fuse (F1) is there (5amp-250v)
if fuse is good and you get no power or front light replace that board, or start component level troubleshooting (usually regulator trans or SM fuses (000)

Posted on Sep 22, 2009


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My Vizio VX37L tv will not turn on. When I plug it in to the wall, the vizio light turns orange but pressing power does not turn the tv on.

Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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Vizio VX37L. Power on turns logo on front panel white but nothing else happens. Have to unplug to turn off. Checked PS fuse and it has continuity. Checked 5, 12 and 24V output pins on PS and it checks to...

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It depnds, if the board is labled with voltages at the DC output connectors or not, if not, you will have to trace out the connection to find out which one is 5vdc standby, switched 5vdc, 12vdc, and 24vdc (I have to do that all the time when I work on circuits without diagram).
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:


Please post back what you find.

Send me pictures if you want,

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If that doesn't work, try:
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I have a Vizio VX37l and was watching it and then I heard a pop and the tv went black. The power light still is on on the Vizio on the front. I checked the fuse inside and it was fine.

It sounds like the 5vdc standby circuit is still working, that is why the main fuse is still good but you may have bad 24vdc power supply, look real close again for blown transistors or IC on the power supply board, but it can also be the backlight inverter circuit boards that blew up also. Look here to see what good parts look like:
Please post back what you find.

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The codes are:
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