Question about RCA F32450 32" TV

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Lost my picture

I turned the tv on and shortly after I heard a pop and lost the picture. This happened to me before on a 27" sharp. To fix the sharp the tech had to replace the horz. control. I fell it's the same thing this time around. Your thoughts please? I do a lot circuit repair on pc's and consoles, just not tv's. So I feel confident that I can fix this problem if I knew what/where to repair/replace. Basicly if you can tell where to do a continuity/Ohm check and what the rating is, would be very helpful. Also how can I get a digital copy of the schematics for this model. The tv is an RCA 32" M# F32450 CH# ACT113CA1 Thanks RDTownsend75

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  • Rob Townsend Jun 23, 2006

    Techman, Thanks for the quick response on the post.

    I did some checking on the flyback, I felt I had results that warrant a replacement. I picked one up at surburban for $20, installed it and bam, still no picture. As before I have sound but no picture. I have the pdf of the schematics. As far as I can tell the schem. point TL02 as the Hortz output. I looked up the grid and I see TL02 as a heat resistor attached to an alum. sink.

    So now I'm lost for ideas, or just plain lost. Tell me how you want me to get this pdf to you. Please take a look for yourself and tell me what you think.

    Thanks Again

  • Rob Townsend Jun 24, 2006

    Looking at board #PCB EW ATC113. I see two transistors, #1 TL81 (signal transistor)?, #2 TL82 (output Transistor). TL82 has some discoloring on both sides of the printed board. I would think this is expected with use and time. Is LL81 the small coil you are refering to? As for removing, cleaning and resoldering. Also on this board there is a Capacitor at CL85 that I do not get a reading from, however I have not done a charge/discharge test on it yet. I'll wait for your response before I continue my headache of a tv. lol I added a picture for your viewing pleasures.



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This modelis avail on a PDF file from Sams photo facts for $27.50. First thing you wanna do is disconnct the horizontal output transistor.. Measure the base to collector or emitter to collector for a short. If it is shorted then the high voltage transformer(flyback xformer) is the reason it is bad. Its part # is 257805 and cost about 40 bucks at most RCA parts houses Also these models a small coil can cause the horizontal to blow out and its the small coil that conects the horizontal output transistor's base to the horizontal output tranformer secondary winding. Sart there first if you dont get anywhere please contact us again and post the pdf and we will look and ask you to do more checks. Good Luck

Posted on May 28, 2006

  • Larry  Dillon
    Larry Dillon Jun 23, 2006

    Ok Sir you need to also check the small coil off the horizontal driver transformer secondary going to the base of the horizontal output transistor. You have to taker it out and scrap the leads and resolder it. Also make sure the Horizontal output transistor is not shorted out of the circuit. I never heard of this transformer only costing 20 bucks??? yea it maybe a good Idea to send me a copy of the PDF if you dont mind But they dont allow PDFs here let me get in touch with the ops and see what they can do for us??. hang tight man were gonna fix this sucka!!!

  • Larry  Dillon
    Larry Dillon Jun 24, 2006

    the coil I was refuring to is marked LL04, the transistors to check would beTL502,TL01, and TL02. Make sure the resistor marked RL05 a 2k resistor is good too.



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