Chosen Solution

So I was removing my old logicboard which had a bad headphone jack. And I bought a new one. I took it out of the iPad it came in tested it and everything. Worked fine. I put the iPad together set it up and it just stopped. And I was careful where I put everything. And handled the logicboard with care.

Old logic board had headphone jack problem. That can be repaired. Where you bought the logic board from? Have you checked the voltage in Tristar ?