vizio amber light E321VL

[johnz]

Total noob here...Have a vizio E321VL thats has just the amber light on. The power button does nothing .....have 5 volts stand by only and no 12 volts going to the power supply.The power supply works...where to start need help? Here are some pics of the main board.

[budm]

Re: vizio amber light E321VL

Please post the good clear pictures of the power supply board, especially where the connectors are, both top and bottom sides of the board.
The power supplies for 12vdc and 24 vdc are switched on the the PS_ON command from the Main board, no PS_ON then there will not be any 12 or 24vdc.
We need to find out if you do have the PS_ON at one of the pin on the power supply connector first.

[johnz]

Re: vizio amber light E321VL

Ok here is the power board..

[budm]

Re: vizio amber light E321VL

OK, per your picture, pin 4 of CN101 is the PS_ON receving pin from the main board, Check the DC voltage of that pin when the TV is OFF, and when the TV is ON. Black probe of the meter can be on the chassis. We need tof ind out if the main baord is sending out 3.3~5vdc to this PS_ON pin first.

[johnz]

Re: vizio amber light E321VL

There is no power on pin 11 thats the PS_ON pin...the only ones that have power are pin 1,2,3 they have 5.2v .

[budm]

Re: vizio amber light E321VL

OK, I look at the label again , pin 11 is the PS_ON. So it is nothing there when you hit the power switch.
Can I see more pictures on how the main board is connected to the power supply board since the main board looks so small and I cannot see which connectors are connected to the power supply board. I can see some voltage regulator IC's on the main board.

[johnz]

Re: vizio amber light E321VL

here's the whole setup

[johnz]

Re: vizio amber light E321VL

Oh and the power switch doeas nothing ..all it has is the amber vizio light on the front of the tv ... thanks for all your help.

[budm]

Re: vizio amber light E321VL

Please see PDF. Please check the fuses, and voltage on those 3 pins and tell us what you read.

[retiredcaps]

Re: vizio amber light E321VL

Please also list the part number of those two regulators that budm circled so we know what the proper output voltage should be.

[johnz]

Re: vizio amber light E321VL

Ok...fuses read 00.2 both...Now i used the multimeter set at 200 VDC ..hope thats right ..with the power pluged in and the vizio light amber.

--Pin1 Pin2 Pin3
U4 2.0 3.2 5.2

U8 0.0 1.2 3.3

U5 0.5 1.7 3.3

heres some pics of them

[retiredcaps]

Re: vizio amber light E321VL

.Now i used the multimeter set at 200 VDC

Retest with multimeter set to 20V DC (twenty) so we get better resolution (more digits). Most voltage regulators have a +/- 1% tolerance so we need to see more resolution in your measurements to see if they are good or bad.

[johnz]

Re: vizio amber light E321VL

ok here goes ---Pin1 Pin2 Pin3

-------------U4 2.04 3.30 5.27

-------------U8 0.00 1.24 3.40

-------------U5 0.55 1.80 3.40

[retiredcaps]

Re: vizio amber light E321VL

ok here goes ---Pin1 Pin2 Pin3

-------------U4 2.04 3.30 5.27

-------------U8 0.00 1.24 3.40

-------------U5 0.55 1.80 3.40

The readings above (pin 2) are "normal" common voltages and your regulators are likely good.

[johnz]

Re: vizio amber light E321VL

what would be my next step??

[shwsrvcs]

Re: vizio amber light E321VL

what would be my next step??

ditto.

cuz I'm having the exact same problem on the exact same model with the exact same readings and the exact sa....

hey... do you have a goatee?

dg

[shwsrvcs]

Re: vizio amber light E321VL

well I was hoping this thread would have gone on a little further, as I have this tv at this same point right now. did this issue ever get resolved? or is there any thing further to add to this posting?

[costinvint]

Re: vizio amber light E321VL

I have 2 of these TV -- one that works and one with the same no power/ amber light symptoms. The broke TV is getting the same readings on U8. When the working TV is off, all 3 pins on U8 is reading millivolts; when it is on, it is getting the same readings as the broken TV. This leads me to think that U8 is OK and that there is a problem upstream from here. Please advise me on how to proceed. Thanks

[awyatt2]

Re: vizio amber light E321VL

had the same on e32vm the 1080p version i believe of this set, under one of the heatsinks was a 5amp 1000v diode shorted. i dont remember the diode number but you can't seee it for the heatsink it is marked on the bottom of the board though. there are two diodes there if one is shorted they both will read bad untill you desolder one of them then one is good the other is bad. hope this helps you out, i searched all day to find it, checked every component on the board and yes it was the last place i looked.

[elect]

Re: vizio amber light E321VL

there is on heatsink on that board part # 0171-2271-3294