Help Broken AEG

So i have a problem that i hope someone can help me with. I have a Classic Army A15M4 that just stopped firing about a month ago. I have no clue with what is wrong or how to fix it. Some one help!!!!

Some basics first. I know this sounds foolish but always try the easy stuff first.
Is the battery charged?
Does the gear box operate?
Does the magazine feed?
Are BBs getting stuck in the hop up?
Put a little more info out here and folks like Andrew and James may be able to help.
Just a thought

Everything was working fine. This happened in the middle of a game. Battery was fully charged, magazine was feeding great, and no bb's are stuck. The gear box tries to fire but nothing. It feels like something is broken in the trigger but i have no clue on how to get to the trigger to fix it.

Check your fuse and or talk to Andrew

What he said!

what he said, especially the andrew part, he is the FREAKING MAN!

I can look at it to determine what the issue is, if you'd like. Send me a PM.