Insignia TV - Power Works - Screen Does Not

Discussion in 'The Projects Forum' started by Altoids, Jul 22, 2015.

  1. Altoids

    Thread Starter New Member

    Jul 22, 2015
    My insignia tv's power light will turn on, but the screen remains blank and does not produce sound. Figured it must be a blown capacitor. I found some burn marks shown in the pictures (front and back of board). Think this is the problem? What is the large item with the copper coil labeled EFD21.... This item produces a resistance reading?

    Ps: the C20 resistor does not produce a resistance reading (ohms)
    However, The resistor next to it does produce a resistance

    [​IMG] [​IMG]
  2. izon


    Mar 17, 2013
    I believe C20 and C21 are both capacitors and if reading in-circuit, you may not be
    getting a correct reading due to other components involved. I think the other part
    you are wondering about is an AC input choke. Insignia is a Best Buy house brand.
    Parts are very scarce and a diagram may be impossible to get. You might put the
    model number in Google and see if anything comes up in the way of common
    failures or check with for any parts such as the power supply/
    inverter board. Good luck.
  3. Altoids

    Thread Starter New Member

    Jul 22, 2015
    Thanks! Much appreciated