EOTech issue

[hawk1]

I got an EOtech (not sure of the model) in a trade a few years back. Stupid me, I put it in the safe with the batteries still in... AND... I forget about it. I opened it a few weeks ago and the batteries had corroded the connections. I ordered new connection pieces from EOTECH and put in new batteries. I turn it on and... NO DICE. THE DAMN THING WON'T TURN ON.

Any ideas on what to look at next?