regarding getting mild electric shock in my new (one day old) “microsoft surface pro”

A consumer reported experiencing mild electric shocks from a brand new Microsoft Surface Pro device while charging, particularly when the battery reaches 70-85%. The shocks occur upon contact with the metal body, even when wearing shoes, and are absent when running on battery power alone. The user confirmed proper voltage output, grounding of the circuit board, and replaced the power socket without resolving the issue. The problem persisted despite device replacement by Microsoft. Responses suggest the issue may stem from supply wiring faults, polarity reversal, or leakage currents in the power supply or charger. Testing with a multimeter in AC microamps range between the device chassis and earth ground is recommended to detect leakage. Use of a mains wiring socket tester or line tester to verify correct socket wiring and polarity is advised. The possibility of electromagnetic hypersensitivity was mentioned but considered less likely. If the device uses a two-pin power cord, polarity reversal may reduce leakage shocks. A 1:1 isolation transformer rated above device power requirements can eliminate leakage by isolating the device from mains earth faults. Concerns about counterfeit or low-quality power supplies accompanying the Surface Pro were raised. Testing the device at different locations can help isolate whether the fault lies in the device or the local electrical installation.
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