Question about RCA D56W20 56" Rear Projection Television

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RCA D56W20 no power and whistling

First, thank you for any and all help. I will try to be descriptive

I have an RCA D56W20 tv recent got an electrical burning smell and now when the tv is plugged in I get a power light and a "whistling" sound then shuts down. it will repeat this cycle within a few seconds three times and then nothing. I never actually get any picture. I have read a previous post mentioning the Flyback Transformer and the Transistor-Horizontal. I would like to know if this is the correct assessment and if so. Where could I get pictures of these parts.? to have a better understanding of what needs to be done.

I have not worked on tv's before, but I do work with computer mainboards and have excellent soldering skills. I have taken the rear lower cover off of the unit and can see several boards. I have used great caution not to touch anything at this point as I know it can be very dangerous to actually work on tvs. I have looked up pricing on for the two parts. I can here the "whistle" or "small siren" sound coming from what I believe is the rear far left board. Again any help would be great.

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Re: RCA D56W20 no power and whistling

Ok. the FLyback is the large black part on the lower left corner.. has large red wire comeing from it... the HOrizontal.. is the large black transistor right in front on the left side on the largest heat sink..getting these parts are tricky.. you must get some numbers on the part itself..there are three different flybacks.... and the horizontal is ussally 259899 rca part number. Good luck and if you need any more assitance email me at ; I work on alot these chasis

Posted on Dec 10, 2007

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