Hello, I need schematic for dell 5531? Or if someone can identify PU4501, chip marking "R9E1D" (I dont know where to buy or how to identify part) controller for 3.3v. Motherboard Dell 5531 213002-1.
Unfortunately have an issue with the main power switch which I have traced the issue down to the motherboard! I know it's a long shot as motherboard manuals from Dell are hard to come by. I can turn it on using the bios options when mains power is applied to the PC after the mains power has been removed for a while.
The only markings on the motherboard are CN-0TP406 and underneath 316764300010 LF-PCB; PWA-SAN MARINO/MB_A01,12
However I would like to make it fully operational, with the power turned onto the unit from the front power switch. The wiring is fine, it looks like I am...
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