Question about Samsung LN-S4051D 40 in. LCD Television

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My television set is not coming "ON" when its turned "ON"

I went to turn my tv on, there was no sound and no picture it was like its not turned on, i checked the AC plug it was okay, checke the fuses they were okay, i also checked if there was AC voltage after the swicth, it was there , so now i'm confused, can someone help me solve this problem

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I had the Same issue. on a 50PF9431D/37 Philips set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsung. Know to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio conections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Link to a photo of the PCB. Make a note of the location of all cable connections then unplug them all. Un-install PCB, Check a Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.

Posted on Jun 02, 2009

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