Is this a dead MMM?

[SilveradoHD]

It is recognized by Castle Link. I re calibrated it to my radio. It now turns green, yellow and red when moving the trigger but still no power. There is also no audible tone anymore. I put an old VXL motor in with the 3.5mm bullets into the 5.5mm bullets and nothing worked still. I also put the steering servo on channel 2 to verify it was working.