Hi, I have a dell studio 1745 with a bad video. Replacement 1745 boards are in the $200.00 range. I found a few 1747 motherboards that are refurbished by Dell for a great price of $66.00.
From what I have been able to track, it seems the only differences are the CPU and the CPU Cooling heat sink.
Looking for Cost on e-Bay it seems I can wind up with a I7 1747 for less money than simply buying a used motherboard.
The reality, it is truly a very easy exchange. There are lots of factory Refurbished mother boards for sale just now on e-bay. However, I also went through 2 refurbished MB before I found a good one.
You will need a heat sink for a 1747 a 1749, about $25.00 or less, and also a i5 or a i7 1st gen chip.
Heat is a huge problem with all of these laptops, #1 failure, keep your laptop clean from dust and use an fan control to run the fans. I just keep mine on medium all of the time. If gaming, go to manual full speed.
If you take your time, and follow the dell 1747 manual, there should not be any problems in making the change. Total parts cost should be around the $125.00 range.
Thanks for the advice! I ran into the exact same situation. I've been searching for a good used 1745 MB on Ebay and the prices are crazy, $200+. It's great that I can get a good 1747 MB, a much stronger processor, and end up with a much more powerful laptop for less than the cost of an outdated 1745 MB! I'm taking the plunge. I've built several desktop PCs/Servers over the years. Always been afraid of modding laptops tho, too many proprietary parts.