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The tv 'runs' - sometimes for hours, sometimes just a few minutes. cut on and off - most times you can hear a ticking - then the power light comes on and the set will. Sometimes the power light will flicker - no ticking sound. Once we let it go 'off' and it 'ran' ticking sound for 5 hours before we unplugged it. Most nights we run it for a few hours - works great - then it goes off - so we just unplug it and leave it till the next day - set may be on five to six/eight hours or not on for days.

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This is typical with many sets when it goes old as there is a high possibility that the components over a period of heating and cooling , tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs.

Remove main plug, the covers - with caution of high voltage, check for dry joints, use a good soldering iron to solder all suspected points. Please find below two links for tips on poor start ups, as if the set is totally failed the SMPS might be faulty.


http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies


http://www.fixya.com/support/r6055091-slow_start_up_circuit_cold_starting

Posted on Jan 03, 2011

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