Lenovo V110-15ISK burned ic

[ktmmotocross]

Hello. Have this Lenovo V110-15ISK with burned ic which looks like power ic for memory. Can somebody identify this ic?

IC is PU5101

[ScorpioMan86]

Re: Lenovo V110-15ISK burned ic

Please upload the pictures and include the board model number as well

[SMDFlea]

Re: Lenovo V110-15ISK burned ic

It could be a Richtek RT8231AGQW

24=

[ktmmotocross]

Re: Lenovo V110-15ISK burned ic

looks like memory chips are toasted. do u thing that i can just remove onboard memory?

i allready lost two welded pads on ic but maybe i can repair it


board is LV115SK 15277-1N

[SMDFlea]

Re: Lenovo V110-15ISK burned ic

I don`t know.The schematic is available on a few paid sites,and its expensive.Nothing on the free sites yet.You could desolder all the chips and check each one for shorts,get replacement ones and reball the ones that test ok.While they`re removed put some ram in the slot and see if it will work without having to move any straps. EDIT: Do you have a DDR4 test card to check the cpu - https://www.aliexpress.com/item/4000614399711.html

[ktmmotocross]

Re: Lenovo V110-15ISK burned ic

burned ic passing 10W to ram chips so it get about 6V. i dont think that ram chips could stand that

[ktmmotocross]

Re: Lenovo V110-15ISK burned ic

I don`t know.The schematic is available on a few paid sites,and its expensive.Nothing on the free sites yet.You could desolder all the chips and check each one for shorts,get replacement ones and reball the ones that test ok.While they`re removed put some ram in the slot and see if it will work without having to move any straps. EDIT: Do you have a DDR4 test card to check the cpu - https://www.aliexpress.com/item/4000614399711.html

what is this cards testing? paths from memory to cpu?