Vizio E421VO - will not power on

[smalltownguy]

Was gifted a 42" Vizio LCD TV, model E421VO. Will not power on. DOA. No activity. Checked power cord, it's good. Checked remote, it's good. Here's some pics. Where to start?

[lotas]

If you know how, then you need to repair the power supply or replace it with a new one (look for a donor).

[bohaboha]

start with some test on PS if the 3,5,and 12v are present

[lotas]

start with some test on PS if the 3,5,and 12v are present

At the moment there will be no voltage at the output, because the hot part of the power supply burned out (the high-voltage ceramic capacitor shorted and exploded and took with it several components (this could be a power mosfet, resistors, diodes, PWM, ...) and most likely the fuse also burned out.

[bohaboha]

At the moment there will be no voltage at the output, because the hot part of the power supply burned out (the high-voltage ceramic capacitor shorted and exploded and took with it several components (this could be a power mosfet, resistors, diodes, PWM, ...) and most likely the fuse also burned out.

i se it now from the picture the he have to replace some component first.by the way lotas can you take a look at my post i am waiting your answer there i mean my thread for Samsung 70 inches

[nomoresonys]

So get in there and replace that cap, test everything on that circuit. If no other problems, maybe test it with a dim bulb tester or similar. if no problems then fire it up, sometimes it can be just the one component that is bad. Testing is the only way to proof it out. If your not sure whats on the circuit just trace whats connected to that cap. Saying there's more wrong without testing is just a guess. I don't do guesses.