http://www.stormcam.org/icom-mobile/
why wont ICOM IC 7am Mobile transmitter on my hand?
I've recently received an ic-t7h transmitter ICOM and I charged the battery and connected to food and both or one of the Comboni not working power of entry and other crap on my radio so I really want it ps it works hasent been activated in a few years if it has nothing to do with it and all input is welcome and im asking this question because I recently obtained a license and HAM would really want to use this. THANKS! 
reset the processor is a good idea … but the newer transceivers have no common power button. You must hold the button until the radio wakes up, and then again to turn off the radio.
My ICOM 706 mkllG Ham mobile transceiver