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Help to identify burnt IC on HP Motherboard L75365-001

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samstown

Post subject: Help to identify burnt IC on HP Motherboard L75365-001

Posted: August 8th, 2024, 3:11

Joined: April 20th, 2017, 7:28
Posts: 129

Hello,

I know it's not directly related to HDD but if somone can help me identify this burnt IC on my motherboard. I've posted on other forum but no answer.

I've search here http://markingcodes.com/search/c/ld but the marking is odd, I can't find anything. I beleive it's a Mosfet QFN 20. ID burned after a stor/ligntening. Now PC start for one seconds and stop.

Thanks
Sam

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fzabkar

Post subject: Re: Help to identify burnt IC on HP Motherboard L75365-001

Posted: August 8th, 2024, 3:21

Joined: September 8th, 2009, 18:21
Posts: 15950
Location: Australia

https://www.ti.com/packaging/en/docs/partlookup.tsp?partmarking=127

Probably "1275C", in which case a TPS51275C.

https://www.ti.com/lit/gpn/tps51275c

Also ...

http://markingcodes.com/search/c/1275c
http://markingcodes.com/search/c/127 (third page)

Why were you searching for "LD"????

_________________
A backup a day keeps DR away.

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samstown

Post subject: Re: Help to identify burnt IC on HP Motherboard L75365-001

Posted: August 8th, 2024, 3:53

Joined: April 20th, 2017, 7:28
Posts: 129

thank you very much !

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fzabkar

Post subject: Re: Help to identify burnt IC on HP Motherboard L75365-001

Posted: August 8th, 2024, 17:51

Joined: September 8th, 2009, 18:21
Posts: 15950
Location: Australia

I would check the MOSFETs as well.

https://qinwei.haoduomoban.com/uploads/20240713/c64ac59a78b8960c746852126f610337.pdf (QN3102M6N)

https://datasheet.sisoog.com/file/7a657573/datasheet/0b6d71c35b68d1e65d0f6807a81f04c16f9f7983.pdf (QN3106M6N)

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A backup a day keeps DR away.

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