MacBook air 13' mid 2012 dead

Hey everyone,

I have a dead MacBook Air I’m trying to troubleshoot.

It’s not turning on whatsoever. The MagSafe LED turns Green for 2 seconds then goes to Orange when I plug it in.

After reseting the SMC it does the same thing. I’ve check the inside. It seems there is traces of melted plastic on the battery (see pics)

above some electrical part, not the lithium blocks.

I’ve tried starting the system with the battery unplugged with no luck.

My question is:

• Could the logic board be dead?
• Can’t the battery be functional even with this dent in it?
• Should this system turn on without a battery?

Thanks for your expertise!