Vizio VX42L U33 Part Replacement ?

[gtrplayr1976]

I have what seems to be the same issue in some of these posts with this Vizio. I checked the VO on U33 ,and it reads 2.1 VDC. I just need to know where to find a replacement ,and is this a fixed ,or adjustable regulator. I have not found this manufacturer at Mouser, or Digikey.
Part is marked AMC1117 F07131.

Thanks, Tom

[Scenic]

Re: Vizio VX42L U33 Part Replacement ?

If there's no voltage designation on the chip (like 1117-33 for 3.3V for example) and there are resistors connected to the leftmost (ADJ/GND) pin, it's most likely an adjustable version.

The 1117 series voltage regulators are pretty much a jellybean part, much like the 78xx series.

http://www.alldatasheet.com/datashee...K/AMC1117.html

edit: Assuming it is an adjustable version:
http://www2.mouser.com/Semiconductor...cing|0&FS=True
just make sure the package matches the one you have..

[gtrplayr1976]

Re: Vizio VX42L U33 Part Replacement ?

If there's no voltage designation on the chip (like 1117-33 for 3.3V for example) and there are resistors connected to the leftmost (ADJ/GND) pin, it's most likely an adjustable version.

The 1117 series voltage regulators are pretty much a jellybean part, much like the 78xx series.

http://www.alldatasheet.com/datashee...K/AMC1117.html

edit: Assuming it is an adjustable version:
http://www2.mouser.com/Semiconductor...cing|0&FS=True
just make sure the package matches the one you have..

Thanks a bunch. That's the exact number off the part.

[gtrplayr1976]

Re: Vizio VX42L U33 Part Replacement ?

Update : Replacing U33 seems to have fixed the issue. I have a blue screen with no signal box floating around ,and it turns off ,and on with the remote.

Thanks for the help.

[shelby5041]

Re: Vizio VX42L U33 Part Replacement ?

Had vizio lcd tv power on...backlight only..no power off

Tested u33 per youtube video....and replaced it...cost .76

Tv now fixed

Thank you badcaps and especially you tube

[shelby5041]

Re: Vizio VX42L U33 Part Replacement ?

If anyone needs part # contact me..