so yesterday i went to adjust a tune in my truck, but my diablo sport tuner decided not to turn on. i noticed what looked like a power/charging port, but am not sure. it's been in the box for probably a year. Any help is awesome, thanks!


Did you remember to turn the key on? That is NOT a charging port, its for power when you download tunes threw you home computer.
yes, i had a friend have the same problem with another brand.
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