Question about RCA TruFlat 27F520T 27" TV

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The tv is a 32"

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Hello
The horizontal output transistor of your RCA TV has shorted. Horizontal output transistor is one, that drive the Line Output Transformer [LOT] in short, which gives voltages requred to the picture tube of your tV. There are mainly two resons for this transistor shortage. If the above said LOT has shorted [a winding short in between at its inner side; and is irreparable]; and for some other reasons which cannot be predicted. First replace this transistor, which can be located very near to the LOT and will be screwed onto a metal heatsink to radiate heat away from it while working.
It will be three terminal black component. Replace it with same type and number, and switch ON your tV for a short time, say 4 seconds or so; unplug the device from AC mains wall socket, touch the replaced component with bare fingers and feel the heat. It may be slight warm, bu not too hot. If LOT has damaged, this transistor also will heat up, and a whisiling sound will be there. If so; never switch it ON again; replace the LOT and it is damaged. OK.

Posted on May 28, 2011

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I hope this helps,
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