Vizio E220VA no power

[bigstick92]

Hi I have a Vizio E220VA that will not power on. No lights appear on even after pushing the power button. I have opened it up and there is no visible component damage and it is getting power. Any ideas?
Thanks.

[budm]

Re: Vizio E220VA no power

https://www.badcaps.net/forum/showthread.php?t=39740

[bigstick92]

Re: Vizio E220VA no power

Hope an imgur albums suffices.

http://imgur.com/a/ObGA9

Tell me if you need more and what specifically.

Thanks again

[RCA2000]

Re: Vizio E220VA no power

The first thing you need to do is to confirm that the standby PS is working ok.

There will be a connector--to the signal board. one or more lines should say something like STBY 3V or STBY 5V. There may be a couple of other, but you MUST have stby voltage--before anything will work.

Measure with your DMM on Volts--to ground--and if you get no voltages out of the PS board--unplug the signal board and wait a bit--then reapply power and check the output volts from the PS again. If you STILL get no voltage out of the PS_-after making sure it is fully discharged--then you have a PS problem.

If you find you are getting proper standby voltages--then you need to see if you are getting the "turn on" signal, from the signal board. This activates the other voltages-such as a 24 or so volt BL supply and maybe a 12 or so volt line that are only there during "run". . There will be a pin on the PS board--and it will either be at a low (0 volts or near it) or a high (3-5 volts) and one way or another--it MUST see a large change--to turn on the RUN voltage from the PS. While probing this pin--push the power button and see if this voltage changes. If it DOES_-but you get no "run voltages" out of the PS--then there is a run voltage problem.

If the voltage does NOT change when the power button is pushed--and with all other periphals disconnected from the signal board--such as the T-con or panel--then you likely have a signal board issue.

[budm]

Re: Vizio E220VA no power

Can you take the pictures of the WHOLE board and also the whole back side of the TV?
There are more than one version of this model, which one are the boards used in your TV, see the barcode stickers of each boards to match what you have. Make the list of the boards.
http://www.shopjimmy.com/catalogsear...q=Vizio+E220VA
BTW, did the TV just died by itself or it was hit by surge or lighting?

[bigstick92]

Re: Vizio E220VA no power

Sorry guys I'm kind of new to this. Thanks for all the help so far.
I got some more pictures visible here: http://postimg.org/gallery/ikp8d99a/10e8b524/

Also I had trouble finding a standby rail (does this model have one?).
Is there an easy way to trace the signal being outputted by the power button?

The T.V. just turned off one day. I had it sitting for a while plugged it in yesterday it turned on then about a half hour later it shut off the display although the light was still on and it became non responsive. I held the power button in for a while until it finally shut itself off, but now it will not come back.


Also for the main board (green) I have Vizio CBPFTQBCB2K02300 Main Board for E220VA Version 1.
Power board (brown) Vizio ADTV1B408XQA3.

Thanks again for the help.

[RCA2000]

Re: Vizio E220VA no power

ALL sets have a standby rail--UNLESS they are turned on by a "hard switch'--one that cuts the AC power to them.

Your set appears to have only one SMPS_-for both stby and run. That connector near the top right of the pix--is likely the one going to the signal board--and it WILL then have one or more lines for stby. Likely a 5 volt line and/or a 3volt line and possibly a 12 or so volt line. If you are seining these kind of voltages on these lines--(with the negative probe on chassis ground)--then the standby voltages are ok--and you then need to know if the signal board is working. But check for the standby voltages first. Likely--they will be marked as such on that connector.

[bigstick92]

Re: Vizio E220VA no power

Ok I have checked standby voltages. They were ok. I have a 5v and a 16v rail and both are functioning.

To check the signal to I just attached one lead to ground and the other to the pin, press the button and look for a voltage increase?

[RCA2000]

Re: Vizio E220VA no power

You need to find the "power on" pin, it could be labeled "on/off" also, on the PS. Then--you need to put the meter on it and check to see if there is a big change--when the power button is pressed. Most of the time--the pin is at or near 0--when the set is off, BUT I have seen some that stay HIGH--till the signaL board pulls them low. One way or another--it needs to see a big change--to turn on the "run" voltages.

If you do NOT get an on signal on the power on pin--when the power switch is pressed--put a meter on the switch pins--and see if there is a change there--when you push it. If NOT---unplug EVERYTHING else from the signal board==but the power supply and power switch board--and check again.

If--with all other peripherals unhooked--you STILL do not get an on signal--you likely have a bad signal board. if, when unhooking the panel or T-con, if this set has one--you DO then get an on signal and power comes up--that is the bad area.

[budm]

Re: Vizio E220VA no power

Please read this thread also:
https://www.badcaps.net/forum/showth...t=Vizio+E220VA

[bigstick92]

Re: Vizio E220VA no power

Started using an old smartphone for pics. I think its a bit clearer.

Ok I did not get any change in voltage but I just want to double check that I'm doing this right. I looked for DC voltage and saw no change when the button when pressed. Heres how I'm reading it

http://postimg.org/gallery/ggpbfsqu/a9236237/

Also in this album is a picture of something on the power board which looks to me like 2 wires are touching each other (visible at top right). Upon a continuity test all of those pins are connected to each other in some way.

If I'm reading this correct for the power switch it appears to not be working. It gave a base reading of -.32v.

[bigstick92]

Re: Vizio E220VA no power

I've read that thread through I'm not sure I have the same problems and that is why I made a separate one.

[budm]

Re: Vizio E220VA no power

Well, from post 19 and later, the OP took some voltage readings at the connector and at the voltage regulators, you will need to do the same thing.
Basic rules of troubleshooting:
Visual inspection for any damaged parts, loose wires and connectors, loose mounting screws, etc.
Resistance testing on the component such as fuses, resistors, etc.
Voltage testing on the test points and on the connectors that are labeled.
Lots of readings and research.

[bigstick92]

Re: Vizio E220VA no power

Did you see the pic I attached earlier about a potential cross connection.

Also I got the readings

-701
5.09
3.3
0

-702
5.1
3.3
0

-703
3.3
1.2
0

-704
5.1
3.3
2.04

I will do some testing on the resistors tomorrow but everything looks sound.

[budm]

Re: Vizio E220VA no power

The picture is too dark to see the wires on the transformer, but looking at the pictures of top and bottom side of the board at shojimmy, those two pins of the transformer are tied together so that is not the problem.
The voltage readings of the 4 regulators are OK.
Since you do not see the DC Voltage toggle between HIGH and LO when power swtich is activaded, it means the main board is not working.

http://www.shopjimmy.com/vizio-adtv1...upply-unit.htm

You may have EEPROM problem.
http://www.shopjimmy.com/catalogsear...q=VIZIO+E220VA

[bigstick92]

Re: Vizio E220VA no power

Is there a way to fix the issue other than buying a part or a new board?

[bigstick92]

Re: Vizio E220VA no power

Also is it possible just to short the on switch to a standby rail with a resistor to maybe kickstart the tv?

Again I'm new here.

I've looked at EEPROM symptoms and I'm not completely convinced that that is what is wrong with mine.