LCD Backlights Driver - Unknown Component

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  • Spongebob89
    Member
    • Mar 2021
    • 24
    • England
    #1

    LCD Backlights Driver - Unknown Component

    Hi,
    I have an "LCD Backlights Driver" and it is not working. After measurments and checking the routes of the PCB I beleive that this component on the red circle is a choke for filtering the supply voltage and block noise from the inverter to go back to the main board. When I measured in ohm and in diode mode with multemeter shows always OL. I shortcircuit this component and it worked. The current that I measured with multemeter is 550mA, so I want rated current 1,5x550mA=825mA~1Ξ‘. Am I right that this is a choke and if yes what value do you beleive is (maybe 15uH or the 15 on the component is just an SMD marking code?)?


    Do you know in which category I have to find it?
    https://gr.mouser.com/c/?q=choke


    Chips Datasheets:
    TL5001
    https://cdn.badcaps-static.com/pdfs/...b2ebb7089e.pdf

    LA6339
    Attached Files
    Tags: None
    • lotas
      Badcaps Legend
      • Jan 2016
      • 4503
      • Russia
      #2
      Re: LCD Backlights Driver - Unknown Component

      It's actually a 1.5A fuse.
      https://www.amazon.sa/-/en/Fuse-100p.../dp/B09FJT4JFF
      Attached Files

        Comment

        • petehall347
          Badcaps Legend
          • Jan 2015
          • 4425
          • United Kingdom
          #3
          Re: LCD Backlights Driver - Unknown Component

          some have 2 amp fuse https://www.alibaba.com/product-deta...471564681.html

            Comment

            • Spongebob89
              Member
              • Mar 2021
              • 24
              • England
              #4
              Re: LCD Backlights Driver - Unknown Component

              Thanks all of you for your replies. This type of fuse consider slow, or Medium, or Fast blow?


              Fusing characteristics: Within 1s



              https://gr.mouser.com/c/circuit-prot...16%20metric%29

              I found this below. The broken was 1.5A/75V/1sec@250%of Ampere Rating and the replacement I found is 1.5A/125V/5sec@200%of Ampere Rating. Do you beleive the difference in the time will not safe?
              https://gr.mouser.com/ProductDetail/...nbZDuW6Q%3D%3D
              Last edited by Spongebob89; 07-22-2023, 06:32 AM.

                Comment

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