Chosen Solution
So I bought a Samsung pn50c450b1d last year that was non functional. When pressing the power button, it would make a clicking sound, and the screen would not turn on. After some searching, it sounded like the problem was related to a bad capacitor on the power board. Fast forward to now, I have removed the power board, and have looked it up and down, none of the capacitors look damaged (no bulges or leaks) and when I check them with my multi-meter, they all test as not dead. I only have a multi-meter, so I acknowledge that I might not have the best testing equipment. That being said, if I were to replace all of the caps, do you think my problem would be solved? time and tediousness of the work is not a factor here as I just want to get the TV functional. The test I did was a simple one, and I’m willing to admit that I might not have done this properly. to test the caps, I set my multi-meter to what I think is Ohm mode (the omega symbol), and placed my probes on the matching leads according to the symbols on the bottom of the board. Thank you for reading this any any replies. I’m at work at the moment, but I can post pictures of the board when I get home in like 6 hours. TL;DR I’ve got a TV that won’t turn on, and all of my research says it should be a cap on the power board, would it be easiest to just replace them all and call it a day? Edit: removed edit because I think I can just reply to answerer
@chromecrash you could do that if you tested everything else and it all checked out ok. Disconnect the power board from the main board and see if your back lights come on. That way you know that your power board at least supplies the LED voltage. After that measure the voltages on the connector for the ribbon cables from the power board to the main board. Let us know what voltages you have on there. I have not seen bad caps as main reason for this type of error in a few years. Possible but not my first suspect Update (01/11/2020) @chromecrash okay so for now use the page from the troubleshooting manual to see if you can get something going here. With a plasma TV there are a just to many different scenarios in order to change boards just based on a hunch. I still think it’s main board or power board but lets see what you come up with. We go to start somewhere
