vizio E320-a1 no power

[Ttom]

Can anyone help me with a schematic for the power supply for a vizio E320-a1 or info on how to troubleshoot this problem. It does not have 5v and the 12v is reading 2.8v. thanks

[budm]

Re: vizio E320-a1 no power

You can start with this:
https://www.badcaps.net/forum/showthread.php?t=39740
We have no idea which version of the TV, version of the boards you have so we need to see the pictures of YOUR boards.

[Ttom]

Re: vizio E320-a1 no power


the label on the pcb is CL621XA03Q

[budm]

Re: vizio E320-a1 no power

Can we see the pictures of the whole back side of the TV so we can see all the boards?
There are many versions of this TV models as you can see here:
http://www.shopjimmy.com/catalogsear...=vizio+E320-a1

Your version uses this power suppl board:
http://www.shopjimmy.com/vizio-adtvc...or-e320-a1.htm

[budm]

Re: vizio E320-a1 no power

http://www.shopjimmy.com/vizio-adtvc...r-e320-a1.htm#

So if you do not have other boards connected to the power supply board, what dcv do you get on the connector? We need to find out if something is loading down the power supply or not.

[Ttom]

Re: vizio E320-a1 no power

the voltages i get are with no connections to the power supply. Some background, we recently had a thunderstorm and i lost 3 tvs,2 routers,a modem, and stereo system. i thought i would start here to salvage what i can.
do i need to plug the connectors back in and re read the dcv?

[budm]

Re: vizio E320-a1 no power

If you tested the power supply board without the main board connected then you should have the 12V (this is an always on 12V). The 5.2V is generated by the Buck converter IC9351 that steps down the 12V to make 5.2V.

The power supply board is on $17 from SJ so it will be more practical to replace the power supply board first.

[Ttom]

Re: vizio E320-a1 no power

[Ttom]

Re: vizio E320-a1 no power

Thanks for your help Budm. that price would be hard to beat replacing components.
PS. I spent many summers in your city as my grandmother lived in daly city.
beautiful place.

[budm]

Re: vizio E320-a1 no power

Do you know the history of the TV? Was it hit by surge or lighting?

[Ttom]

Re: vizio E320-a1 no power

It was surge i think. The modem, another tv, and router were on ups and still were damaged.

[budm]

Re: vizio E320-a1 no power

That means there is a chance that the Main board especially around the HDMI circuits are damaged too. You need to do real close visual inspection.

[Ttom]

Re: vizio E320-a1 no power

i will check it and let you know..