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Enumerate some of the materials used in etching PCB
Ferric Chloride, PCB, masking tape, container
What can you suggest to fasten the etching of the PCB
Shake the container ; use warm water
What should you do if after soldering the component, you have noticed that the circuit is not working?
Check for cold solder then resolder.
What should you do if after checking the soldered joints and components you have noticed a cold solder
Resolder
What should you do if the solder lead does not stick to the soldering tip during the tinning process
Clean the tip of the soldering iron using damp sponge or sand paper
What are the possible cause if after testing the assembled product, you have noticed that the product is not working
Cold solder, wrong placement or orientation of components, polarity error, defective components
What tools are you going to use if after inspecting, you have noticed a cold solder. How do you go about it?
Melt the lead in the joints and desolder the lead using a desoldering pump then resolder
What should you do if after soldering the PCB, you have noticed a crack at the copper line
If short crack, apply solder bridging
If long crack, use jumper wires
What is the first thing you shoul do after pre-heating the soldering iron and before soldering work?
Tinning Process
What precaution can you suggest when soldering semiconductors?
Use heat sink
Do not overheat
What regulation should you observe when doing soldering work in European countries?
Using leadless or lead-free soldering technique
What safety precaution are you going to take when soldering work using lead?
Use PPE (mask)
What are you going to do with excess solder on the tip of the iron?
Clean the tip by using damp sponge or sandpaper
Give some important reminders when doing soldering work.
Use PPE
Proper soldering technique
Tinning process
