Vizio sv470xvt1a won't come out of standby

[freakaftr8]

picked up this TV last week for free in the previous owner stated he went to bed and then in the morning it wouldn't turn on anymore. Being relatively familiar and vizios and fixed a few in the past I first started checking voltage regulators on the mainboard they all seem to be within spec. Oddly if I jump 5 volt standby to PS-ON I get all the voltage is coming off the power supply including 12 and 24 volts to the inverters but the inverters will not power up since the main board is still in standby. Is this an EEPROM issue? I noticed somebody else on the forums has a 42 inch version having the same problem.

Btw yes I tested all fuses as well

[freakaftr8]

Re: Vizio sv470xvt1a won't come out of standby

I ordered an eeprom. I feel that this is it. Anyone else have a clue?

[budm]

Re: Vizio sv470xvt1a won't come out of standby

I was looking at SHOPJIMMY last night to see if they have EEPROM for this model but it is not listed.

[freakaftr8]

Re: Vizio sv470xvt1a won't come out of standby

okay I couldn't happen to notice that all the voltage regulators between pin 1 and 2 are receiving 1.243 volts
Is this a little shy of 1.25 Volts?

Yes the eeprom replacement didn't work.

[budm]

Re: Vizio sv470xvt1a won't come out of standby

The spec is +/-3% so you are OK.

[freakaftr8]

Re: Vizio sv470xvt1a won't come out of standby

I have a voltage regulator in question u21 Pin 1 is 0v pin 2 is 1.24v pin 3 is 2.5v. is that correct?

this is an adjustable 1117 regulator

[freakaftr8]

Re: Vizio sv470xvt1a won't come out of standby

nevermind I read up in another post if somebody fixing the same exact model TV that his regulators were running the same voltage and it appears that there okay.

I'm thinking probably a bad processor or a faulty BGA connection as I am NOT getting any PS on or back light on signal from the main board although I can jump right things and get back to work in the power supply rails to come up.