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60 inch plasma TV manufactured in 2012.

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Can't find blown capacitor on plasma TV

My Samsung plasma TV red standby light turns on but the panel and rest of TV doesn't work after I heard a loud bang from the TV. I've opened the back panel looking for a blown capacitor but nothing obviously looks damaged. Would the bang have come from a capacitor or a different component type?

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EDIT:

Hi @oldturkey03 thanks for your comment! Photo of the power board below:

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I'm not sure yet how to remove the Faraday cage near the power connector.

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@didurebootit thanks for the image and no worries about the cage. Its most likely just an EMI suppressor and we‘ll measure around it. Let‘s see what we can find out..

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@didurebootit Would the bang have come from a capacitor or a different component type? Any component that has catastrophic failure can make and impressive noise. I have had rectifiers fail that made way bigger noises than any cap that I have had blow up on me. Anyhow, check the components on your power board underneath that cage. Make sure you just look since I expect more caps etc. under there and you do not want to get zapped on those. So no touching unless capacitors are discharged. Of course disconnect the power cord. After that you will have to get your multimeter out and start measuring the outputs from the board to narrow down what have failed. It’s difficult to hunt for the needle in a haystack and trying to find a single component that has failed. Post a straight head-on picture of the power board (the one that has the outlet connection). That way we can see the connectors. Or at least give us the board number from it so we can see if there are schematics for it.

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Hi @didurebootit

A loud bang (or pop) could also have been from the audio system caused by the TV suddenly shutting down due to a power problem.

Couldn't find a free download, but it may be worthwhile to invest in the service manual for the TV

Just a thought

On my Samsung, the blown capacitor was the 10v - 1200uf. A very common problem with Samsung...check YouTube, that's where I learned how to fix it.

@oldturkey03 Usually easier to use an ESR meter when the caps look like this. Got mine on eBay when I tried to salvage a monitor a few years ago. See here for an in-circuit tester.

@nick sure if you want to check all of those. In this case I was going for measuring the circuitry and outputs first and not the capacitors. I find that IC's like MOSFET's and rectifiers make a much louder noise when blown then the little caps with the exception of the HV caps by the power connector. Those are pretty impressive.

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