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Please I need help to identify a 5 pin SMD Semiconductor "KV5MK"

Discussion in 'Microcontrollers, Programming and IoT' started by DJKH, Dec 25, 2016.

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  1. DJKH

    DJKH

    3
    0
    Dec 25, 2016
    Hi, please help me identify an SMD semiconductor that I found burnt in a sircuit board I am trying to repair, it has 5 pins and it is labeled "KV5MK" I need some equivalent replacement SMD to replace it.
    Thank you for your help.
     
  2. ramussons

    ramussons

    367
    71
    Jun 10, 2014
    If you tell us what circuit board you are trying to repair, maybe a few photos of the component,...., it would help us to help you :D
     
  3. DJKH

    DJKH

    3
    0
    Dec 25, 2016
    Thank you for your reply, the circuit board is for a LooL IPTV receiver, the user lost its original power adapter plug (output 5V) so he tried a different plug with output 12V that is when that component get burnt. Please check the pictures (On red is the damaged part, on green is the same component in a different spot on the board):
    upload_2016-12-27_12-7-26.png

    upload_2016-12-27_12-9-56.png

    upload_2016-12-27_12-5-48.png

    Thank you again for your help.
     
  4. davenn

    davenn Moderator

    13,669
    1,891
    Sep 5, 2009
    putting 12V into something that requires only 5V is a bad thing .... there is most likely more than that one
    component that is damaged .... a component can be zapped without any visible external damage

    seeing where they are on the board and the surrounding components, they most likely are switching regulators
    I cant seem to find any references for it online


    Dave
     
  5. DJKH

    DJKH

    3
    0
    Dec 25, 2016
    Thanks Dave, so it is going to be hard to fix this board :( ...
     
  6. davenn

    davenn Moderator

    13,669
    1,891
    Sep 5, 2009
    most likely, yes
     
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