I am experiencing this very problem. I just purchased the fuse listed previously in this post from Shurter.com and plan to follow the steps to see what happens. Sounds like this is working for some people. The minimum order from Shurter however was 10 fuses, so of course I ordered 10. I only plan on using one and keeping a couple as backups so if anyone needs one feel free to email me at sthompson@bfmed.net and I can drop one in the mail for you. They were cheap, lik 48 cents a piece.
I haven't tried a hard reset because you need a fully charged battery when doing this and since I have no way to charge my phone, I can't get a full battery.
Thanks to everyone for the good info! If this doesn't work I'm going with the Moto A1000! But I love my MPX200! All my friends are blown away when I pull it out to listen to music! Anyone have the Shure ear buds? Completely blocks out all ambient noise leaving you with peace and quite and great sounding music. Great for air travel. Check em out if you like!
http://www.shurestore.com/earphones/eseries_e2c.htmleBay has them too, or course. Serious bragging rights having a device that replaces an iPod and makes calls! Let alone all the other features (ie Flight Mode, Sync, Calendar, Contacts...) the phone offers, as yo uall know I'm sure.
I have about 2 hours of battery life left. And after that I can only hope and pray my phone will come back to life once I replace the fuse. I'll let you know how it goes.