I have no additional components attached to the launchpad or arduino. And the Arduino is working perfectly so there is some internal short within the launchpad itself. I checked the voltages and you are correct. The 3.3v regulator from arduino is shutting off and there is no voltage coming on 3.3v pin once I connect it to the launchpad. When I disconnect it, the 3.3 v is back on. So, there is some short after the U5 TPS73733 voltage regulator. IMPORTANT UPDATE!! After finding out, there is a short after the U5 TPS73733 regulator, I connected the JP3 jumper and disconnected the JP2 jumper to stop power in the microcontroller and the Power LED turned ON. In this configuration, the board was powering up from both 5v and 3.3v pins. This shows, the short is within the T4MC1294's microcontroller. Most probably, the microcontroller is dead or burnt. Is there any way to fix my launchpad or revive the microcontroller? Can you tell me what could have possible caused this?
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