W520 Motherboard Replacement Compatibility

I have a W520 with an i7 2760QM Quadro 1000m and the 4 RAM slots, a couple of weeks ago it died on me. Took it for a repair assessment - was told that the motherboard was dead and that the repair costs would be, for lack of a better word, obscene. Even the guy who ran the diagnostic had never seen a price quote come anywhere close to as high as what he found for mine. I could buy at least four refurbished W520s for the price of this one mobo.
So I was thinking I might just grab a mobo online and do a DIY repair, except the specific part I was quoted on (FRU 04W2036) seems to be nigh-impossible to find. However there appears to be plenty of W520 mobos floating around with different FRUs (04W2040, 04W2024, 04W2035, etc etc etc) that AFAICT look identical. I took a glance around the forums and saw nothing regarding this specific mobo serial, so I'm wondering if any, or some, or only the specific FRU 04W2036 for my specific configuration of W520 could be used to make a repair. What's the difference between all these varieties of mobos? The only thing I can think of that would seriously seperate this specific mobo would be having 4 RAM slots instead of the typical 2, but if any of these would otherwise be compatible I'd be more than willing to sacrifice a couple of slots if it meant avoiding a repair job that costs more than the whole laptop did brand new three years ago.
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Good day.
If you don't already have it, you might want to download your hardware manual:
http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/t520_t520i_w520_hmm_en_0A60078_08.pdf
Pages 135-137 show a number of W520 system boards, with some indicators of the differences, all of which appear to be permutations of: nVidia Quadro 1000M or 2000M, +/- AMT, +/- TPM and +/- RAID.
FRU P/N 04W2036 is specified as: "Nvidia Quadro 1000 M, non-AMT, TPM, no RAID adapter".
For reference:
04W2040 differs only by having RAID.
04W2035 differs by having the Quadro 2000 M, AMT and RAID, but no TPM.
04W2024 is shown on page 134, but it's listed as being for the T520.
Finally, using 04W2036 on the maintenance parts site:
http://www-304.ibm.com/shop/americas/webapp/wcs/stores/servlet/default/PromotionDisplay?promoName=pa...
shows the part as in stock. You may wish to have a look and compare the price to what you've been quoted.
Does this help?
Regards.
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Hi,
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If I have helped you, why not giving me a kudos?

Hi,
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If I have helped you, why not giving me a kudos?

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welcome to the forum
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