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

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

  1. DJKH

    DJKH

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    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.
     
    DJKH, Dec 25, 2016
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  2. DJKH

    ramussons

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    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
     
    ramussons, Dec 27, 2016
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  3. DJKH

    DJKH

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    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.
     
    DJKH, Dec 27, 2016
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  4. DJKH

    davenn Moderator

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    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
     
    davenn, Dec 27, 2016
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  5. DJKH

    DJKH

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    Thanks Dave, so it is going to be hard to fix this board :( ...
     
    DJKH, Jan 1, 2017
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  6. DJKH

    davenn Moderator

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    most likely, yes
     
    davenn, Jan 2, 2017
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