does the LED itself still power up? what you need to do is pop the LED module out of the light and keep the LEDs leads intact, then find the polarity of the LED to the module and reconnect the LED and test to see if it fires up (don't put it back in yet). Then note the polarity (use a sharpie and mark a witness mark on the electronic module and LED lead) and remove the LED, clean the heat sink pedestal with rubbing alcohol, and then use a very small (pin head sized) drop of thermal epoxy such as arctic alumina or arctic silver and place it on the heat sink area, reattach the emitter and reassemble the module. then put the module back into the body of the light. From there do not put in any batteries and screw the the head on all the way, put in a set of batteries first (use a thin sheet of paper as a contact isolator for the time being, we just need the batteries as a pressure applier, then allow the light to sit over night so that the epoxy has time to setup and adhere the LED back onto the heatsink. If all goes well, the light should work good as new again, if not. E-mail maglite and they will either ask for you to send the broken light back and they will send you a new one or they will send you a new LED module.
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