Tried that trick (power bottom and volume up) for a while, but now it?s really not working and it?s dead.
Can someone help me?
When you say "dead", I assume you mean that even hooked up to power it will not turn on at all (including the power+vol-up button fix)?
Or, does it operate only if connect to external power, and the battery seems to not be charging (but tests as being in good operating condition w/ Super Battery, SystemPanel, or similar app)?
If so, I had a similar experience with mine a few month ago. I could get mine to power up by firmly (very firmly pressing on the bezel just to the right of the charging indicator light at the center of the bottom bezel.
It would work for a time, but then revert to non-operating. I eventually sent it to Moto (under warranty at the time). They fixed it, but did not provide any explanation as to what had been the issue. I even called support to try to figure out what they had fixed, but they couldn't/wouldn't tell me.
I rather suspect that there is a key connection between the mainboard, the power connector, and the battery at that point in the device that had become loose or disconnected, which could be (temporarily)reconnected via the pressure on the bezel above that point.