Need schematic for motherboard.

The M'Board Makers do not make Schematics for their products available and since most of what will require replacing is Surface Mount even if you are qualified to repair you should know that VLSI Surface Mount Chips are not easily replaceable and even less likely that the people have the necessary Ultra Violet Soldering Stations available. ;)

All you can do here is Visually Inspect things and carefully look at any Electrolytic Capacitors on the Board and replace as necessary. Not much else that is replaceable on these boards. As these are 4 layer Boards you can not do anything about dropped Tracks between the 2 layers so to all intents and purposes they are not fixable.

However if you find a source of Schematics let me know as I wouldn't mind having them for the more common M'Boards either. ;)

Col

Well, if you have worked in electronics for 40 years, I expect that more than once you have worked without a schematic.

I would start by applying power to the motherboard and checking the voltage regulator, clock and power control circuits. The filter caps on the LVR circuits are a common failure point for many motherboards.

If those look okay, identify the major chips on the board and download the data sheets from Intel. The full chip manuals have both pin-outs and timing diagrams.

Chas