CQ ELECTRONICS BLOG
Component-level repair notes for general electronics and household appliances — power supplies, circuit boards and fault diagnosis — from CQ Electronics in Brisbane.
Electronics repair in Brisbane for phones, laptops, consoles, power tools, household appliances and vehicle electronics — all fixed at component level, with 5% off every repair.
A Milwaukee brushless drill came in dead with four shorted N-channel MOSFETs on the motor controller. How brushless commutation actually works, why all four failed together, and how we repaired it.
A multimeter gives you a number. An oscilloscope shows behaviour over time. Why real test equipment decides whether a fault gets found or guessed at.