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I have a Samsung UN46H5203AF with black screen and no sound. Ive taken the back off but the capacitors look good. Now what?

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Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main 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. Pull up older posts.
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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Posted on Jan 02, 2017


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Posted on Jan 02, 2017


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You have a few options. The first and most obvious is to have it fixed by a pro. The second would be to replace the faulty PSB. The third option would be to replace individual capacitors.

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Let me know if I can help further.


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