Question about Sony KP-51WS500 51" Rear Projection Television

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My tv turn on then after 2 minute it become green ang turn off by itself what so i need to replace

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  • samsmh Oct 03, 2010

    some poeple say its the d board is that right



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It is symptom of defective Green Picture Tube that needs to be replaced. (technical name is Green CRT)
This is rear projection tv that has three picture tubes (red-green-blue) inside to project color picture on front screen of tv,
Picture tube replacement in rear projection tv requires lots of adjustments and professional would be good to perform that so contact local tv repair shop for repair estimate.
Let me know if you have additional question.

Posted on Oct 02, 2010

  • Shahid Electronics
    Shahid Electronics Oct 03, 2010

    D board looks just fine as it is deflection board and if D board got bad for some reason, tv wont even show picture for 2 minutes



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1 Answer

Patay sinde


Your concern is that the TV turns itself off. This could probably be due to any of several possibilities:
1. cold solder or loose connection, may maluwag na koneksyon sa loob o mayroong hilaw na hinang. Kailangan lamang itong painitan ng soldering iron upang muling manumbalik ang kinang at tamang pagkakapit. May mga pagkakataon na maaring maluwag din ang ACplug sa outlet;
2. heat induced - may pyesa na nag-iinit at tumitigil sa pag-andar pag mainit na. Kadalas ay mga capacitor, transistor or regulator;
3. low supply of the AC mains - mababa ang kuryente, maaring ito ma-check sa pamamagitan ng isang Voltmeter. Kung mababa nga, maaring gumamit ng voltage regulator kagaya ng sa mga computer;
4. timer - may mga pagkakataon na mayroong timer kaya kusang nag-switch off anf TV makalipas ang takdang oras;

Of course repairs would involve knowledge and familiarity with electronics circuitry and components, use of a DVM and a soldering iron. Should you be uncomfortable performing a DIY, perhaps your best bet would be to seek the services of a qualified professional.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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