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I have a d52w27d the standby light comes on for 5 sec and goes off for 4 sec it does this three times before it completely stops. it never turns on. there was a capacitor that had burned a hole through the board. the cap is located in front of the flyback. it is .oo87uF at 2000vdc. thank you for your help in finding this problem.

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  • vernon johnson
    vernon johnson Nov 18, 2009

    wassup sensei. you already know i am going to give you high marks. i bet you saw vljenterp81 and lit up like a candle. i have already cleaned the board and reconnected the cap. the cap is burned though but it still reads fine. what i am going to do is find a cap like this and replace it. i am assuming that the transistor is the h.o.t. that you are talking about. i had thought about doing so but i did not do it but now i am going to try that also. i willbe talking to you when i achieve these.

  • vernon johnson
    vernon johnson Nov 19, 2009

    as usual you are the man for the job. look for rca e 13209bc

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You may need to scrapped the board with a paper cutter gently

so as to remove the burned printed circuit board. and replace the said bad capacitor. then clean that part of the board with an unused brush soaked in lacquer thinner to totally remove the burnt part .

you might also have a resistance check on the collector and emitter

of the transistor. usually the center and the rightmost pin. it should
not be almost near zero reading.

do all of these with the unit unplugged from the wall outlet.

Posted on Nov 18, 2009

  • 3 more comments 
  • Rommel Cana
    Rommel Cana Nov 18, 2009

    might as well measure the voltage on it, or after the primary winding , only if there is a replacement capacitor installed . . it is called B+

    have a resistance check first to be safe.

    look /check also for other might be bad capacitor 330 uF 35V near the chopper secondary windings




  • Rommel Cana
    Rommel Cana Nov 18, 2009

    watch out also it might be bluest white ( arcing) once you turn it on

  • Rommel Cana
    Rommel Cana Nov 18, 2009

    if you have a variac , or an step down transformer, might be better to use it , during troubleshooting , if none use 100w incandescent bulb.

  • Rommel Cana
    Rommel Cana Nov 18, 2009

    it will be connected in series in the main power supply

  • Rommel Cana
    Rommel Cana Nov 18, 2009

    B+ should never exceed 135V having more is bad.

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