I work as a software developer and have built hundreds of computers so here's my 2 cents on MFT. It's just a smaller/slower version of your modern day PC, the equivalent of an iphone/Android handset with a bigger screen. Computers have 2 sides, hardware and software. A hardware issue is the worse of the 2 (ie usually more expensive to fix) and needs to physically be replaced. Software issues are much more common and are easily fixed with updates. Since I don't have my Explorer yet, I can't comment on how fast Ford is pushing out updates, however I do already have a sync account and have read many of the problems/forums on the syncmyride website. Keep in mind all of these issues are a combination of coding for X number of phones, user error and legit issues. Ford has to code for nearly each handset. Sure, Bluetooth is Bluetooth but it's just a communication interface, not a language. Each phone has it's own mini-operating-system that needs to talk to MFT (it's like web development for IE, Firefox, Chrome, Safari, etc). Based on how well that communication is, you may have all features available or none. As with all computer-based systems, it should have a hard-reset switch somewhere. Pulling the fuse is the equivalent of doing this, so on next start-up it should cycle through it's diagnostic checks (like a BIOS screen for example). If they coded it right, it should "fix itself" but it sounds like this is not the issue. A blank screen sounds like a hardware fault or possibly a fail-safe where the software detects a non-recoverable fatal error on start-up and goes into stasis until a dealer can look at it. The only other option I can think of is to unhook the battery for 15 minutes, hook it back up and see if MFT comes up.
I would make sure you have the latest updates from syncmyride.com. If you can get your MFT limping along again, try updating it with a USB stick as the website details.