Vizio E320-A1 32"LED not turning on

[cguzek]

Got tv from a friend, and it's not turning on

When first plugged in, white light on bottom goes on, then fades out and no light are present.

When power button is hit, the same white light goes on and stays on, but nothing else happens.

Not getting any power at any of the terminals leaving the board to go to other boards.

Noticed this tv has a problem with eeprom on mainboard, and it is a common issue, there is one eeprom on mainboard that has mark where others are clean, so think this may be part of issue. But don't know how to even find eeprom chip to solder in.

Please let me know what i should be testing for.

[budm]

Re: Vizio E320-A1 32"LED not turning on

Shopjimmy sells EEPROM if that is the problem:
http://www.shopjimmy.com/catalogsear...=Vizio+E320-A1

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

here are the pics hopefully

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

Update

was checking electric, and nothing seemed to be testing right.

No standby power, and power coming in was testing from tv ground screw to line was 63 volts, and from tv ground screw to neutral 53 volts, got 118 when neutral and line tested together.

Then i checked a pipe above work area to ground because it was only other ground my multimeter could reach, and it tested continuous to a ground from an outlet. between pipe and line into tv i get 118v.

When i tested using pipe as ground and touched the ground screw on the tv i got 54v, same to the tv case. When i tested it to neutral and line it read correct, 0v and 118v respectively. when i tested my pipe ground to the ground on pins leading out i have 54v and it is the same with all the other pins leading out.

Seems somewhere power is leaking to ground bad because this is weird, not sure if it is the original eeprom problem i thought, or if there is a short to ground somewhere in ps that isnt' blowing fuse

[budm]

Re: Vizio E320-A1 32"LED not turning on

When you work in the primary side (hot side) of the power supply, the DC circuit ground ref will be the negative leg of the main filter cap. The DC voltage on the TWO LEGS of the MAIN filter cap should have about 165~170VDC. The chassis can be used for ground ref. point for the secondary side of the circuit, not for primary side.
Since you do have indicator VIZIO, it means that the 5VSTBY is more likely to be OK. Right now the problem is in your main board.

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

I am having my multimeter jump between OL and 8.xx v on the main capacitor, and the whole chassis and all pins going out are reading 54v just from being plugged in, don't even have main board plugged into ps. pretty sure something is wrong on ps.

[selldoor]

Re: Vizio E320-A1 32"LED not turning on

where are your probes when testing the main capacitor. Picture of meter
What is meter set on?

[budm]

Re: Vizio E320-A1 32"LED not turning on

Must be error in measuring points or method.

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

since i was having an issue with testing using chassis or screw as ground, i started to use a copper waterpipe that runs above my head. the copper pipe tested continuous with outlet ground. so when i have the black lead on a grounded pipe, and the red lead on each of the pins leading out of ps or on the chassis itself, my meter reads 54v

[selldoor]

Re: Vizio E320-A1 32"LED not turning on

Are you having a laugh!!! Stop messing about and do the tests as we ask.

[selldoor]

Re: Vizio E320-A1 32"LED not turning on

Also if you are to continue please update your profile with country and mains voltage so we know what we are dealing with.

And post the picture of your meter

[budm]

Re: Vizio E320-A1 32"LED not turning on

When you work in the primary side (hot side) of the power supply, the DC circuit ground ref will be the negative leg of the main filter cap. The DC voltage on the TWO LEGS of the MAIN filter cap should have about 165~170VDC. The chassis can be used for ground ref. point for the secondary side of the circuit, not for primary side.
Since you do have indicator VIZIO, it means that the 5VSTBY is more likely to be OK. Right now the problem is in your main board.

since i was having an issue with testing using chassis or screw as ground, i started to use a copper waterpipe that runs above my head. the copper pipe tested continuous with outlet ground. so when i have the black lead on a grounded pipe, and the red lead on each of the pins leading out of ps or on the chassis itself, my meter reads 54v

Well, I am out of here. No need for me to give any more instruction on how to read voltages in the primary side, or any other readings.

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

All i am getting is confused.

I did test from chassis screw to secondary side and am not getting voltage out of any of the pins

There is no ground wire coming into tv is just Neutral and Line.

When i use the neutral, an outlet ground, or the pipe above my head and have the other lead on the chassis or chassis screw it reads 54 volts, same with the pins on secondary side. If i have my black lead in an outlet ground and red lead on the chassis or pins, should i be getting 54v?

[budm]

Re: Vizio E320-A1 32"LED not turning on

Again :
"When you work in the primary side (hot side) of the power supply, the DC circuit GROUND REF. will be the NEGATIVE LEG of the main filter cap", "The DC voltage on the TWO LEGS of the MAIN filter cap should have about 165~170VDC. The chassis can be used for ground ref. point for the SECONDARY SIDE of the circuit, NOT FOR PRIMARY SIDE"

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

Well, I am out of here. No need for me to give any more instruction on how to read voltages in the primary side, or any other readings.

There is no need for you to teach me, i know how to use my multimeter and test voltages, but am getting fucked up readings, no need to be a tool and act pompous with that above quote. When i test ground to neutral i get no voltage, when i test ground to line i get 118v, when i test ground to chassis I GET 54V

[budm]

Re: Vizio E320-A1 32"LED not turning on

Fine, good luck with your repair!

[cguzek]

Re: Vizio E320-A1 32"LED not turning on

Again :
"When you work in the primary side (hot side) of the power supply, the DC circuit GROUND REF. will be the NEGATIVE LEG of the main filter cap", "The DC voltage on the TWO LEGS of the MAIN filter cap should have about 165~170VDC. The chassis can be used for ground ref. point for the SECONDARY SIDE of the circuit, NOT FOR PRIMARY SIDE"

I was trying to use ground screw for secondary, and the ground screw is showing 54v when other lead is on separate ground

[budm]

Re: Vizio E320-A1 32"LED not turning on

"There is no need for you to teach me, i know how to use my multimeter and test voltages"
Here is the clue, this TV dose not have safety Ground wire to the chassis since it only uses two-wires, there are safety (X/Y) caps from L and N to the chassis.
That is it for me.

[martino]

Re: Vizio E320-A1 32"LED not turning on

First of:you insulted budm,that will get you nowhere as he is one of our most knowledgeable members here,you should listen to him,he's trying to help you..
second:you get no secondairy reading from a screw to an outpin pin,PROBABLY CAUSE THERE IS A FAULT IN THE PSU,and.....they where trying to help you on that.
Third:FORGET your copper pipe,your psu creates its own floating ground,it has NOTHING to do with your house ground...
We can't help you if you keep being stuck on your own ground copper pipe etc...And to be honest,you saying you know how to use a meter and whatnot,I don't believe you cause you keep proving to us that your method of measuring is WRONG..!!!
I think your only option is to apologize to budm,and MAYBE you get the proper help here...
Till then...............good luck..........

[ivtec]

Re: Vizio E320-A1 32"LED not turning on

(here is no need for you to teach me, i know how to use my multimeter and test voltages, but am getting fucked up readings, no need to be a tool and act pompous with that above quote. When i test ground to neutral i get no voltage, when i test ground to line i get 118v, when i test ground to chassis I GET 54V)

This dude must be kidding with us all here in the forum?
and not respecting the folks that have so much acknowledge about this stuff,
this way no one deserves to be helped.