Re: Looking for schematic for LA-D751P motherboard

Hey man thank you so much, you are awesome!

Hi,

Wondering if anyone here might have a schematic for this board;
LA-D751P, i7-7700HQ w/ GTX1070 + 8GB
Alienware R4 17

Still looking into the charging issue.

Re: Alienware 17 R4 Charging issue

Hmm, I haven't had much luck so far identifying similar components on this board to the ones in that other model as shown in the schematic. The closest thing I can see being the charging controller might be PU201, it's damn tiny though. Also not sure I'm seeing the sense resistor.
Attached some additional photos showing what I presume to be the charging area of the main board between the DC-IN and BATT connectors.

Regarding that cap I'll have to check if meters I have at home can measure capacitors so I can check the values of...

Re: Alienware 17 R4 Charging issue

Thank you for that.
I was also running this past an ex-boss who also had PCB experience. I pulled out the board in order to give him a photo of the components on the other side of the DC-IN & BATT connectors and noticed a soot mark near the rear of the unit. Sure enough on the board there is a blown SMD cap. It is above where the CPU is on the other side and lines up with what I presume to be the CPU voltage regulator section. Could this be in any way related? As I've said the unit otherwise functions ok up to and including a gaming...

Re: Alienware 17 R4 Charging issue

Hi, yes that description is correct. It is very slow, maybe 1% drop over a couple of days but it does go down. Thanks for the reply, something for me to check.

Hi there.
I have one of these models which has an issue charging the battery. Usually it reports in Windows that it is plugged in and charging but the charge % doesn't increase. It will, after a while, then report plugged in not charging. Leaving the unit powered off but still plugged in makes no difference, the LED indicates it is charging. The AC Adapter is correctly identified as a 240W unit, battery health reports fine and this was also the case when running onboard diagnostics.

I have tried a replacement battery and used a second identical AC Adapter. The unit otherwise...

Re: New Members - please post your introductions here

Hi, I'm from New Zealand. I found this forum while trying to find information on resolving an issue with an Alienware 17 R4 [Which I hope to create a post for]. Interestingly enough I replaced bad caps at a previous job; Pentium 3 and Pentium 4 motherboards for ATMs that were plagued by swollen caps.