Main Questions (If you don't like long post, otherwise read the Details as well):
1) Are all the G74 motherboards, between all the models alike? (ex I cud swap the A1 MB and DH73 MB and it would work fine.)
2) Can I install a 120Hz LCD on a Laptop with a 60Hz LCD (Like install a DH73 screen on the A1 variant) and vice verse?
I am asking these questions because I would like to buy some replacement parts for my G74sx that I bought about 10 months ago w/o warranty (since I got it off eBay) and I am trying to make it last another 2-3 years (enough for college). I have already disassembled my G74sx once to replace the thermal paste and re-ground the sporadic Sentelic TP so opening it up isn't going to be a problem. The Motherboard is the onyl component I would have to worry about replacing since the G74 is discontinued. I would like to buy a replacement board in case I fry my GTX 560 since that is the only thing I cannot swap out if it were damaged. Since the G74 was discontinued not too long ago, there are lots of repalcement parts on eBay. The problem is that I currently have a G74 with a 120Hz screen since it is the 3d variant. I want to know if there is anything special about the motherboard for the 3D variant vs a non 3D G74 variant like the A1. I am asking because I would not want to purchase a replaceable G74 motherboard found from a non 3D model and realizing that my 120Hz screen is incompatible with the motherboard. I feel like its a stupid question since I would assume that all G74 motherboards are the same and that all the components would work fine. Then the only difference would be the extra drivers you would install for a 3D application to work.