iPad Pro M5 won’t boot under warranty, Apple rejected repair. Culprit is just a tiny capacitor.

Barely used for just 5 months with only 19 charge cycles, this nearly new iPad Pro M5 suddenly stopped powering on completely. It was sent to official service, only to be flatly denied warranty coverage with a notice stating "does not meet repair conditions". After multiple failed appeals, the owner had no choice but to send it in for paid out-of-warranty repair. Upon teardown, we found no water damage and no signs of user-inflicted damage across the entire device. Using thermal imaging short-circuit fault localization, we finally pinpointed the root cause: a single capacitor under the metal shield had cracked spontaneously, triggering a high-current short on the logic board. After replacing it with a capacitor of the same specification, the device was fully revived with all functions working perfectly. A minuscule component failure led official service to write off this premium flagship tablet as a total loss. How should users defend their legitimate warranty rights in such a situation?