Question about Televison & Video
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Posted on Jan 02, 2017
If you have the screen it is a fairly straight forward repair, however the cost of the screen almost always will exceed the cost of replacing the set. Being as we got no model number here is a general cost of a 37 inch screen used by many manufactures, $ 895.00 plus a $300.00 core charge
Posted on Mar 06, 2008
I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsung. Known 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 connections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Is a Link to a photo of the PCB. Make a note of the locations of all cable connections then unplug them all. Un-install PCB, Check all 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. Look to see if the Caps are deformed and or split at the top. 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 25, 2009
SOURCE: I have aSamsung model LN-T528
That's an expensive repair for 30 days warranty. In general if the LCD screen has to be replaced the set may be considered 'totaled'. Look at the price of a new tv set and consider selling the old one for parts.
You can call local tv repair shops.
and get a second opinion.
Something else you can try. Your tv seems to work otherwise so turn on the set and place a bright flashlight against the screen. You should be able to see moving images around the edge of the flashlight. Try several places on the screen. If you can see something, the lcd is probably ok. The problem is the back lighting.
Get into the menu. Check the backlight value to make sure it was not accidentally turned down/off.
This set uses LEDs and not fluorescent tubes for back light. There is no fluorescent/mercury tubes or inverter board.
Whatever controls the LEDs is what should be looked at. I am not sure if it is a separate board or the main board itself. It would be listed in the service manual which I do not have.
You can ask the tv repairman.
Boards are sold separately. Some places to look at plus others;
Posted on Feb 15, 2011
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