Question about Samsung LN40A550 LCD TV

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Tv wont turn on (wont stay turned on)

My LN40S550 turns on/off constantly when i turn it on. Sometimes if I turn in on independantly it will turn on, but as soon as I turn the DVR on (from Direct TV) the tv turns itself off, then goes through a long (now as long as an hour) process of on/off, on/off....help!

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  • 83 Answers

Pls. check power coad is likage or luse canaction in plugh
if ok then problum is inside of tv so pls. cheked in pcb.....
1st : SMPS output voltage and 5v /12v/ 24v /135v dc filter capaciter cheked and replace 470/16v /1000/35v / 220/450v if any capaciter likage or sort * first cheked dyode.
2nd : EHT output line capasiter or dyode checked 4.7/250v /100/160v
and line coil or 1ohm register cheked
3rd : DT (driver transfermor ) and with cancting spear dry.
note: pls descanect tv with DVR and cheked tv set is turn on atlist 10min. minimum with any ather product (DVD , GAME BOX ,CABEL CANACTION) if is ok. then problum in DVB setup box .

Posted on Oct 04, 2009

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