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But I suspect some smd electrolytic capacitors may have higher esr.Do you have esr meter to check in-circuit?
i had this on a TF103, reflow the controller i.c.can you post a foto with the rear cover removed?
no need to replace or reball, just put flux under it and re-flow it.it's a "flip-chip" package, and on the T103 is on a sub-board.
your talking theory's to somebody who has already done it.there is no underfill on these, and no oxide issues - just cracked solder joints probably caused by flexing of the pcb with a long and thin chip on it.