Acer SF315-41G / Pegatron BK5EA. missing dgpu_en_pwr

[gurj1979]

Hi guys.
Need help with this.
I've got 2 boards with the same issue. Both missing dgpu_en_pwr which is needed to turn on Dedicated GPU + RAM + Dgpu power.

I've got the schematic, but no Boardview to be found anywhere on the net. The motherboard doesn't have any component labels/markings neither.

APU is Ryzen 7 2700u with RX540 Dedicated GPU.

[gurj1979]

Re: Acer SF315-41G / Pegatron BK5EA. missing dgpu_en_pwr

Can anyone help?
I've still got this machine, been sat on shelf for ages.

[gurj1979]

Hi guys,

I got an Acer Swift 3 SF315-41G with a missing Q9102. I compared it to another board, and the SMD marking shows BM (It's what looks like SOT23-5).
The schematics doesn't have a part number so I can't locate it online.
Can anyone let me know what the part number is or an equivalent I can use ?

Also, the 2nd board is missing the DGPU Enable signal, so the DGPU doesn't get any power at all. This pin is triggered by the CPU. But an I missing another check somewhere ?

Thanks in advance.

[gurj1979]

I found out what Q9102 is. SOT-353 KRX102U or LRX102UT1G.

[gurj1979]

So going back to the original issue.
Im still unable to get the CPU give a dgpu_en_pwr signal to turn on the DGPU.

Can anyone help me out here please ?