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Burnt out Blanket Controller

Discussion in 'Troubleshooting and Repair' started by Harold Younger, Oct 30, 2015.

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  1. Harold Younger

    Harold Younger

    2
    0
    Oct 30, 2015
    I live in Brazil where the voltage is 220 volts, 60Hz. My wife accidently bypassed my step down transformers and connected the 110 volt controllers into the 220 volt socket.The controllers were then burnt out. I am trying to find someone who can repair the two controllers since replacements are no longer available.
     
  2. Alec_t

    Alec_t

    2,913
    791
    Jul 7, 2015
    Welcome to EP!
    Further info needed. Brand/model number/schematic?
     
  3. shrtrnd

    shrtrnd

    3,785
    501
    Jan 15, 2010
    Winter is coming. Momma wants you to cuddle with her on cold winter nights instead of relying on electric blankets.
    Get someone who knows how to repair electrical things, or take a risk and open-up one of the controllers (UNPLUGGED), to see if you can identify the damage.
    Just hope the controller is the only component that took the hit, and not heating elements in the blankets themselves.
     
    ADRT likes this.
  4. Martaine2005

    Martaine2005

    3,116
    855
    May 12, 2015
    My sentiments exactly.
    Harold, are you sure it was an accident!!? You may need to stock up on more headache tablets!:p

    Open the controllers and take some nice clear , close pictures of either side of the board. And post them here.

    Martin
     
  5. Harold Younger

    Harold Younger

    2
    0
    Oct 30, 2015
    The controllers are from a Perfect Fit Queen size blanket Model number LVBQ-H1. The controllers are Model 120-18VD5
     
  6. 73's de Edd

    73's de Edd

    3,002
    1,263
    Aug 21, 2015
    .



    Sir Harold . . . . . .





    Is there a possibility that this problem has already been "pre solved" for you per this :
    OR I would think that a LOT of the control circuitry info would be interrelated, once you opened up your unit for inspection.

    To wit:
    They don't totally redesign and incorporate a completely new engine in each years car models!

    Heat Controller :


    [​IMG]



    Controller and its housing :

    [​IMG]

    Source:



    THANKS ! . . . . be to the Honorable CDuncan

    https://www.electronicspoint.com/threads/electric-blanket-repair-perfect-fit-controller.255567/



    73's de Edd

    .
     
  7. Colin Mitchell

    Colin Mitchell

    1,417
    313
    Aug 31, 2014
    The quickest and easiest way to fix the board is to remove the black things you can see in the photo above and measure between each and ever one of the pins with a multimeter set to LOW ohms.
    If the needle moves right across the scale when the probes are in one position and also when they are reversed, the component will be damaged.
    Start with the 3-legged components.
     
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