Question about Samsung LA40R81BDX 40 in. LCD TV
value of these capacitors will be different, most likely they will be
somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
This problem is more or less like a bad capacitor on the power board which is making the TV switch on and off
I know of someone that had this same problem and the cause was because the capacitors used on the Samsung were only 10V and the welding was poor. The capacitor was replaced with 25V capacitor and re-soldered the bad welds. Now it's working normally again.
So you can check the capacitor on your TV's power board. Open the unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors).
After replacing these capacitor(capacitors) most likely the normal operation will be restored.
If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.
I hope this helps.
Compliments of the season.
Posted on Dec 30, 2010
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Posted on Jan 02, 2017
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