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PostPosted: Sun Oct 01, 2017 2:09 am 
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Pilgrim
Pilgrim

Joined: Sun Oct 01, 2017 1:13 am
Posts: 1
Hi. Can anyone help me identify which is the main bios chip on my Lenovo T431s motherboard. Please see high res picture here:

https://ibb.co/eVMfRG

I have bought a replacement chip and the two chips I've circled in the picture are the only two that are the same size. I beleive one is the main bios and one is the EC. I cannot find any detailed imformation online about this motherboard.

Thanks.


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PostPosted: Fri Oct 06, 2017 12:23 pm 
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Enlightened Master
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Joined: Fri Jun 14, 2002 1:03 am
Posts: 17142
Location: England
They both look like MOSFETS (DC - DC converter)to me. The BIOS IC is probably the 8 pin IC in line with the top of the CMOS battery. A good close up round the battery may clear it up.

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