Rupak, it does seem that this board has been damaged in some way. Being that this board functioned for one year I assume that it was exposed to an ESD event or operated such that its lifetime was shortened in someway. If you wish to debug this issue I would suggest you look at the components that are heating up. This will help point you towards some components that may have became shorted. Note: if something is drawing lots of current the DCDC switching supply, U14 and associated components, will get very hot even though it may still be working normally. Take caution as these components can get hot enough to burn you after damage has occurred. TI does not repair these devices. Regards, Cody
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