Vizio E500AR no power

[Naturallyk2]

Looked at the previous posts for this tv, but no avail. Lightning is suspect of the damage. Fuse is good. No standby light, try to power TV and all it does is a white light will turn on then turn back off where standby light should be.

347 volt on both the big brown capacitors. No voltage for PS on when I press power button?

1.Ps on-------- 0v
2.GND
3. 3.3VSTB---- 3.23V
4.GND
5.GND
6.GND
7.12VA ---------12.62V
8.12VA ---------12.62V
9.12.VA ---------12.62V
10.GND
11.LINE OFF ---.053V
12.BL_DIM ------ -1.63V
13 BL_ON -------0V
14.NC

[budm]

Re: Vizio E500AR no power

"347 volt on both the big brown capacitors. No voltage for PS on when I press power button?" What did you use for the meter black probe for Gnd? Chassis? Negative leg of the cap?

[Naturallyk2]

Re: Vizio E500AR no power

When I measured the big caps, I used meter black prb on negative leg of cap. When I measured everything else, I used keter black prb on chassis.

[nomoresonys]

Re: Vizio E500AR no power

No ps-on or bl-on, seems like a mainboard issue, both boards there for 29 bucks, if you buy m make sure you match up the first 8 letters from your serial #: https://www.shopjimmy.com/vizio-e500...repair-kit.htm

[nomoresonys]

Re: Vizio E500AR no power

Similar there: https://www.ebay.com/itm/VIZIO-E500A...YAAOSwcXhcSqKp

[Naturallyk2]

Re: Vizio E500AR no power

No ps-on or bl-on, seems like a mainboard issue

Is there anyway to confirm that?

[nomoresonys]

Re: Vizio E500AR no power

With tv unplugged from ac, unhook the cable from mainboard to powerboard, leave unhooked, plug ac power back into powerboard, see if backlights come on, they probably won't, now check those voltages again with that connector off.

[nomoresonys]

Re: Vizio E500AR no power

You can try to force on the powerboard and backlights: Make sure cable from powerboard to mainboard is UNHOOKED-use a 1K resistor to jumper from 3.3VSTBY to ps-on, if no backlights jumper an additional resistor from 3.3stby to bl-on may need another resistor from 3.3stby to bl-dim, so you may need to use 3 resistors to get the backlights on, if they come on then you have proven the backlights and powerboard.

[nomoresonys]

Re: Vizio E500AR no power

Also look closely at the mainboard there's a couple fuses you can check, check for voltage on both sides of the fuses, black negative probe on chassis ground and red positive probe on each side of fuse, fuses are probably labeled F1 and F2.