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Emerson lcd tv lc320em82s turns on and displays digital video but then shuts off.

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Hello,

This problem is more or less like a bad capacitor on the power board which is making the TV switch on and off by itself.

I know of someone that had this same problem and the cause was because the capacitors used on the TV 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.

The 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.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

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.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

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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