Re: Vizio E470VL no power, logo not lit

After removing the board to try to chase down the short, I noticed on the underside of the board that one of the capacitors is missing. I will attach the picture I took of it. There are no marks on the board around it, but I wonder if it could be the result of whatever component shorted. I also took a picture of the top side of the board oposite it.

It was C510. Not sure what size it might have been as it's SMT.

Thanks,...

Re: Vizio E470VL no power, logo not lit

That is correct. When the power supply is not connected to the main board, there is +5 volts on the three pins on the left of the connector. When the power supply is connected to the main board, there is no voltage on any of the pins.

Thanks,
Chuck

Re: Vizio E470VL no power, logo not lit

I'm confused, my previous reading led me to believe that the standyby pin should have +5 volts on it all the time, when it is plugged in. Then the main board would send a signal to the power supply board to turn on the other +5 and +12 sections when the power on switch was depressed. Below is a close up of the connector on the power supply board with the pinout next to it.

I will try to check the VR on the main board. All three fuses on the main board are good.

Thanks,
Chuck...

Hello all, I have a TV that I am trying to repair. It is a Vizio E470VL. I got it used and the previous owner told me that it had just quit working and he thought it would probably just be a fuse or something.
I have tried powering it on with no effect. It doesn't click nor light up the logo on the front. I opened it up and checked the fuse and it is fine, 0 ohms. I looked at all the caps on the power board and all of them seem to be good. I have been checking some voltages on the power supply board. With the main board connected I get 0.0 volts for all of the outputs of the board to...

Re: New Members - please post your introductions here

Hello all, I'm enjoying reading all the great information on here. I hope someday I can learn enough to contribute as well.

Thanks,
Chuck