Question about Samsung PN58B540 58 in. Plasma HDTV

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58" Samsung plasma has no picture. While I was watching TV, it made a popping sound and went out. I have sound but no picture. Which circuit board should I change?

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Finding a capacitor that has blown is your only saving grace. Chances are it was on the PSU. Go to www.shopjimmy.com for parts. There are so many different parts it could be, start with the least expensive (if you don't know what capacitor popped), Start with the PSU then go to the Y scan upper and lower, then move onto the X main then buffers.

Posted on Sep 29, 2015

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Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Apr 19, 2015

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Unplug it, take the back off and have a look. If something was popping, im sure you will find which board blew out. Make sure you get the full model and serial number so that when you order a replacement, you get the right one.

Posted on Apr 19, 2015

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Posted on Jan 02, 2017

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Hello, Last night my Samsung plasma TV made a fairly loud popping sound while I was watching it and then the power went off. When I turned back it on, no picture but sound was o.k.


Yes the caps on theower supply, but you can check power supply board by smell an look for burnt parts it is common. May need more than one board if they are cheap get both.

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Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
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1 Answer

Blown Picture


There is not much you can do to fix your plasma. Since the plasma is less then 1 year old, still under Samsung warranty.
I would suggest to call them to fix it.
Good luck.

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