On Monday, August 15, 2016 at 11:45:36 AM UTC-4, KenO wrote:
Received a Samsung UN32EH4003FXZA LED TV with starting problems. From experience with this model guessed it had bad cap(s) so checked the Power Supply and found the 47uF 160 V cap starting to bulge. The adjacent 47 200 V cap and all the other caps are OK.

To date, the best video I have found for this model TV problem is by radiotvphononut https://www.youtube.com/watch?v=9yLLAnjpTLI

I would like to upgrade this failed 47uF 160 V cap so would appreciate any suggestions.

Thanks

Ken

Thanks everyone for your comments!

ohg... "If it cycles like the one in the video, it could be that cap." Yes it does. Is there some way I can post a JPG of bad cap?

pf... "Look for caps rated to 100 C. This greatly enhances longevity." The original bad SAMWHA was listed as 105 C.

"Look for a decent brand" Was thinking of using a NICHICON. Any comments?

Checked the cat http://www.nichicon.co.jp/english/pr...ini/index.html

Any suggestions concerning Series? Was thinking of upgrading from 160 V to 200 V? Any comments?

Am unsure if should keep original 47uF or ~ double it?

Are there any references as to difference it will make in cap life?

Am also wondering about normal vs low ESR cap?

Rechecked SAMWHA WL Series http://www.samwha.com/electric/product/list_pdf2/WL.pdf and failed cap was listed as Operating temperature range of 40 ~ +105 C, Extremely low impedance at high frequency, High reliability withstanding 5000 hours load life at 105 C

From checking seems SAMWHA has a poor reputation either that or Samsung did a poor job in designing this Power Supply!

It is a BN44-00554B Did a search and lowest price is $14.99 from https://gopartserv.com/products/sams...4gkaAh2V8P8HAQ

If you search "BN44-00554B problems" will find Samsung UN32EH4003FXZA - tries to start - problem found! http://www.badcaps.net/forum/showthread.php?t=40665 so do not have much faith in this Samsung PS at any price!