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

DJKH

Dec 25, 2016
3
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Dec 25, 2016
Messages
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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.
 

ramussons

Jun 10, 2014
449
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Jun 10, 2014
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449
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
 

DJKH

Dec 25, 2016
3
Joined
Dec 25, 2016
Messages
3
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.
 

davenn

Moderator
Sep 5, 2009
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14,126
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.

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
 

DJKH

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