vizio amber light E321VL

[awyatt2]

Re: vizio amber light E321VL

amen, cash kennedy. mine was the input side of the smps. fought it for 3 days

[cashkennedy]

Re: vizio amber light E321VL

Im not sure if you ever ran the proper test on the PS_ON pin. (Budm kind of described what you were supposed to do wrong)
Your supposed to take a 20v DC measurement of that pin while it is off, then while pressing the power button, then after.

The key thing here is that if you see 3 volts while pressing the button then the mainboard is fine, and PSU is bad. If you dont see 3 volts when pressing the power button then either the mainboard or buttons are bad.

[johnz]

Re: vizio amber light E321VL

nope...stuck at a dead end..!...maybe later someone will come up with something to try?

[elect]

Re: vizio amber light E321VL

Were anybody able to fix this problem ? please let me know. vizio amber light E321VL but don't turn on.

[elect]

Re: vizio amber light E321VL

powersup board is ok itest in other tv problem is on main board on left and powersupply board on right

[awyatt2]

Re: vizio amber light E321VL

did you check the diodes on the power board? find a large one near the smaller caps check for shorted

[awyatt2]

Re: vizio amber light E321VL

check the diodes the powersupply may be different but it still has diodes.

[elect]

Re: vizio amber light E321VL

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

[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.

[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

[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?

[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

[johnz]

Re: vizio amber light E321VL

what would be my next step??

[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

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

.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...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

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

[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.

[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.