In this chapter we shall consider the way to go about actually carrying out repairs once the fault has been established. Most engineers are already proficient at the ‘physicals’ of repair work, but those that merit special mention are covered below: the first few relate to problems which could well cause the sorts of intermittent faults which were discussed in the introduction.
Printed circuit boards
PC boards are a feature of virtually all consumer electronic equipment, and are a prolific cause of trouble, generally with open-circuit paths of one sort or another.
One of the most common repairs required is that of resoldering a poor joint. The term ‘dry joint’ is used as a blanket description for this type of ...