Samsung LNS4041DX/XAA Power On Clicking

[fdhale]

Recently, my Samsung LNS4041DX/XAA is taking several minutes to start up. It will click several times and eventually turn on. In searching the web, I found several references to this occurring due to bad caps on power board (BN44-00134A). I opened mine up and found the several bulging caps (pictured). I've pulled them from the board and I'm looking to replace them.

Capacitor 1 and 2 (CM817 / CM811)
Samxon 1000uF, 10V, 105C8, GF(M), UDA
10mm, 16mm (diam, height)
(pictured)

Datasheet (Samxon GF)
https://cdn.badcaps-static.com/pdfs/...2d7a55af48.pdf

Capacitor 3 and 4 (CM807 / CM808)
Samwha 1000uF, 25V, 105C(M), WB, U2A
10mm, 21mm (diam, height)
(pictured)

Datasheet (Samwha WB)
https://cdn.badcaps-static.com/pdfs/...e01af2af63.pdf

I've looked on Mouser and found a couple of close replacements, but the ripple current aren't exact. Is it better to order a replacement that has a slightly higher or lower ripple current? How about higher or lower Impedance / ESR?

[budm]

Re: Samsung LNS4041DX/XAA Power On Clicking

You can replace all of them with PANASONIC FM/FR series from DIGIKEY.

[leadout_kv]

Re: Samsung LNS4041DX/XAA Power On Clicking

i have a similar issue. mine will click, come one, screen will have snow, then click off.

[fdhale]

Re: Samsung LNS4041DX/XAA Power On Clicking

Going to order these caps from Digikey and see if it solves the power-on problem...

Panasonic EEU-FM1A102
https://www.digikey.com/products/en?keywords=P12353-ND
Panasonic EEU-FR1E102L
https://www.digikey.com/products/en?keywords=P14425-ND

[vinceroger69]

Re: Samsung LNS4041DX/XAA Power On Clicking

if your replacing those capacitors pictured i would all the rest (not the very large one on primary side of psu as thats usually ok) theres only about 20 capacitors in total and there all the same age so may fail shortly please note not all bad capacitors buldge and leak etc they fail with bad esr issues too which can cause bad start up issues etc so for the little extra cost replace them all.

[fdhale]

Re: Samsung LNS4041DX/XAA Power On Clicking

if your replacing those capacitors pictured i would all the rest (not the very large one on primary side of psu as thats usually ok) theres only about 20 capacitors in total and there all the same age so may fail shortly please note not all bad capacitors buldge and leak etc they fail with bad esr issues too which can cause bad start up issues etc so for the little extra cost replace them all.

Good feedback. Since the caps arrived today and I need the TV for New Year's Eve , I replaced them and now the TV works again. Now that I know the unit works, probably worth taking that advice and replacing all the caps in the near future.