Question about Sanyo DS27510 27" TV

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T.V. wont turn on

All the fuses are ok but the horizontal output transistor only has 57 volts, sounds like a low voltage power supply problem but i'm not sure what.

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  • marty winslow Oct 11, 2006

    I opened the collector of the output transistor but the voltage is still 57. I dont think it is a problem in the yoke because the tv wont come on at all. It just doesnt seem to be getting high enough voltage to turn on.

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But my freind, If the set had a cold and hot chassis, it could be he is not measuring the voltage from the cold ground and therfore would be a normal reading?

Posted on Oct 10, 2006

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The voltage might be low because is being loaded down,open the collector of the output transistor and measure the voltage again,if it goes up to 130 or the voltage is suppose to have you might be looking at a bad output transformer(flyback)there are other parts that can cause the loaded down voltage,the yoke can be one and capacitors in the deflection circuit,check to see if one of this caps is overheated (bubble)or cook,Be carefull if you open the collector when you measure the voltage,If you can try measuring the voltage somewhere else.Lets Us know if you need meore help.

Posted on Oct 09, 2006

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