I need some opinions.
In November 2014 we went to Hawaii for vacation and I decided to bring the 7D with the 17-55 for the vacation photos.
When we got there the camera had developed a depression and would not turn on.
I checked it at home , before departure, and only thought the batteries were dead and that was the reason.
Had two batteries, fully charged them both, none would turn the camera on.
Just speculating here; if it was stored for that 1½ year with the battery attached, isn't it likely that will destroy the battery? I believe I've read in some manual that leaving a battery inside will over-drain it and make it impossible to re-charge that battery again.
That could account for why the 7D wouldn't fire up before your holiday to Hawaii (how lucky are you! hawaii, must be a dream going there
Second; maybe the camera got damage during the travel to Hawaii?
Assuming you flew there (are there even any non-special charters that sail people to Hawaii?), then maybe the 7D was damaged by airport-Xrays or shaking/airpressure changes during the flight?
Like I said, I'm just speculating as to what MIGHT have caused your 7D to stop working. It is ofcourse possible you had a half-bad 7D from the start and the problem slowly evolved. That does indeed happen (kind of like the backside navigator-button on the 5D3 that some have reported falls off. Mine hasn't fallen off yet, but since those reports I do ofcourse worry about it (and treat it all the more gentle
All that said; Canon is rich enough that they could have the best customer-service in the world, but obviously they're a business and not your friend. Let's not kid ourselves here. Businesses don't care about you! That's just a fact (even if you are in pain and have spent all your money buying their product)
I'm not sponsored by Canon. They do not pay me in any way. I've paid for my Canon products myself and I do not in any way advertise for Canon. I couldn't care less about Canon or any other commercial company. I treat them the way they treat me; ME FIRST, THEM SECOND! There's no fairness involved, just the law. So remember all this the next time you vote for government; vote for somebody who will regulate business instead of letting them get away with whatever they want. That's all you can do at this juncture I think.
Good luck with your future electronics
PS: I do concur with what's been said about storage in sealed bags: Don't do it. Keep your equipment out in the open room-air. Leave your bag open. An unzipped camera-bag for example. If you don't want dust on it, put a little towel over it or something. But don't seal it up