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Samsung SP56K3HXX/XSA keeps switching off and os

TV turns on, picture comes on, about 40 seconds later it just switches itself off, then back on. I have secured the blue thermal switch to the closed position, but television still turns itself off and on.

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6ya6ya
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Posted on Jan 02, 2017

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techman
  • 3130 Answers

SOURCE: toshiba 42wt29b. screen keeps turning blue

MMMM Hard call here. The fact that it does try to come on blue maybe an indication that the power supply regulator circuit is good. It could also be a shorted blue tube and when it comes on its overloading the screen drive and the set goes into overload protection shutdown. The real way to see Would be to pull off the blue crt socket as well as the Hi Voltage lead on the crt and see if the set comes on without blue. If it does Your gonna need a pict tube. If it dosent then troubleshooting along the switched power supplys would be neccassary.. BUT I advise you THAT IF YOU HAVE NO EXPERIENCE TROUBLESHOOTING TV SETS PLEASE SEEK A PRO TO ASSIST YOU AS THERES VERY HIGH VOLTAGE INSIDE THESE SETS EVEN IF THEY ARE UNPLUGGED. GOOD LUCK

Posted on Jun 29, 2006

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SOURCE: TV keeps turning itself on and off, onto standby

Right i had this same problem for ages! i cannot explain why but when i uplugged my DVD player (which was flashing its light at the same time as the tv for some reason) the TV has worked fine.

Posted on Apr 22, 2008

SOURCE: LG Rear Projection Television Model RT-56NZ23RB - Fault

For my LG TV - LG RT-56NZ23RB, I replaced two STK 392-120 chips and it has fixed convergence problem now.

Posted on Jun 09, 2008

  • 1 Answer

SOURCE: TV keeps turning itself on and off, onto standby

I managed to find a local repair man who fixed the problem. He put in a new transformer.

Posted on Dec 05, 2008

  • 1 Answer

SOURCE: Samsung DLP 62 inch turns off by itself after being switched on

I had the same issue but instead of shorting out the sensor, I removed the bulb assembly, cleaned the interior of the assembly and TV the best that I could with a vaccum and small paint brush. Once cleaned, I reinstalled the bulb assembly and the TV has worked for the last eight months with no problem.

Posted on Jun 27, 2009

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