On Thursday, August 18, 2016 at 12:38:31 PM UTC-4, KenO wrote:
ohg,

"Don't overthink this. This is simply a bridge bypass cap, not a PFC filter."

Am trying to use this as a learning experience.

I have a hard time believing that Samsung would continue to use poor quality caps in their LED TVs.

Instead am wondering if the Samsung BN44-00554B is a poor design? If this is correct then the 47uF 160 V 105 C cap should be upgraded. My problem is I have No knowledge or experience in this area, which is why am asking for suggestions.

Samsung will use those caps that are most likely to survive the warranty period by sufficient a margin that the owner forgets when the item was purchased - about 2 years, or so. After which it is counter-productive to improve results.

If the OEM spec. is 47 @ 160 @ 105, stick with the 105, or look for 125C caps. You would do OK with these:

http://www.mouser.com/ds/2/420/-772867.pdf Mouser only to show what I mean - you do not need 1,000 of them!

Peter Wieck
Melrose Park, PA