Mobile Repairing Course in Hindi: Beginner to Board-Level Technician

Module 1 — workshop safety and tool use

Study ESD precautions, battery fire safety, isolation, polarity, microscope use and safe bench power. Identify multimeter modes and learn how not to place a meter in current mode across a voltage source.

Practical: inspect a dead training board and write a no-power baseline record without soldering.

Module 2 — electrical foundations

Learn voltage, resistance, current, continuity, diodes, short-to-ground tests and pull-up networks. Understand the difference between an unpowered resistance test and a powered voltage reading.

Practical: measure a known resistor and a dummy load, record range and uncertainty.

Module 3 — phone subsystems

Map battery → PMIC → system rails → SoC → DRAM/storage. Study charging/USB-C, display and touch, network/baseband, cameras and peripheral bus fundamentals.

Practical: draw a fault tree for “not charging” and identify the first safe test.

Module 4 — boot and software

Understand boot stages, USB enumeration, eMMC versus UFS, firmware package identity, AVB, A/B slots and logs. Learn why flash success does not prove hardware health.

Practical: analyze a read-only boot or restore log, then mark unknowns rather than guessing.

Module 5 — evidence-based case study

Students produce one complete case report: symptom, board ID, instrument/calibration, expected-versus-observed table, diagnosis confidence, next test and post-repair validation. Use the printable worksheet.

For instructors, see 8-week training curriculum.

संक्षेप में (Hindi)

पहले exact model और board revision confirm करें। Power और signal की जाँच सुरक्षित तरीके से करें। जो value, pin या conclusion verified नहीं है, उसे अनुमान के रूप में दर्ज करें—confirmed fault के रूप में नहीं। फिर evidence के आधार पर अगला test चुनें।

Related learning

Continue with all learning resources, the printable diagnosis worksheet, and the existing storage diagnostics.