Possible surge damage question

grandmumJanuary 23, 2012

I was wondering if you thought this was a power surge situation?

I had a LCD TV go on the fritz today, powers up but there are issues with it turning on. The surge protector it was plugged into appears to be fine, the red light still indicates protection. The DVD player on same strip is fine as well as the cable box.

Do you think I got surged since the other devices are working or can I isolate the TV?

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electricalkid

I doubt you got a surge.

    Bookmark   January 24, 2012 at 8:14AM
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saltcedar

Was the TV a Samsung by any chance? They had a bad run of "caps" that
exhibited this turn on issue. Most are covered without a warranty though
you may have to push them to do the repair.

    Bookmark   January 24, 2012 at 6:09PM
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grandmum

IT wasnt a samsung, it was an LG (4.5 years old), However, my son says all indications point to the capacitors.He said they were slighly bulged on top but not leaking.

So since the TV was at least trying to start plus the rest of the stuff was not DOA, is it safe to assume it wasnt a surge but mechanical failure?

No other devices seem to be affected.

    Bookmark   January 24, 2012 at 8:12PM
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saltcedar

Sounds like LG had the same manufacturers brand of Caps in their
power supply. That's not a surge issue.

    Bookmark   January 24, 2012 at 10:06PM
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yosemitebill

With your additional information, it is safe to assume it wasn't a surge but component failure.

It's not uncommon to have electrolytic capacitors fail prematurely in the power supplies of many newer products such as flat panel televisions where every penny counts.

Capacitors are selected not only by the value required, but must also be derated based on the voltage and temperature of the application. The inside of the television allows for very little heat dissipation.

Yes, they could use better quality or higher rated components but it would cost more to manufacture - and they don't want to do that!

    Bookmark   January 24, 2012 at 10:14PM
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alan_s_thefirst

Bulging caps are failed, leaking or not.

    Bookmark   January 27, 2012 at 1:35PM
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