Soldering Skills
Can you explain the steps you follow while soldering a component on a PCB?
What is the difference between a valuable solder joint and a bad one?
What tools do you typically use for soldering?
How do you remove a component from a PCB without damaging it?
Have you worked with SMD components? If yes, how is it different from through-hole soldering?
Power Board Repair
Have you repaired power supply boards before? Can you describe one example?
What are the common faults in SMPS/power boards?
How do you identify a faulty component in a power circuit?
What precautions do you take while working on high-voltage boards?
What tools do you use for troubleshooting power boards?
Electronics Components Testing
How do you test a resistor, capacitor, and diode using a multimeter?
What is continuity testing?
How do you identify if a capacitor is faulty?
Can you test a transistor using a multimeter? Explain briefly.
What is the difference between analog and digital multimeters?
Basic Electronics Knowledge
What is a rectifier? What are its types?
What is a diode and how does it work?
What is a MOSFET and where is it used?
Difference between transistor and MOSFET?
What is AC and DC?
What is voltage, current, and resistance?
Circuit Understanding & PCB Design
Can you read and understand circuit schematics?
Have you used any PCB design tools? (e.g., Eagle, KiCad, Altium)
What are the basic steps in designing a PCB?
What is the difference between schematic and PCB layout?
What is grounding in PCB design and why is it important?