If your laptop/iMac has stopped working all of a sudden there are many variables that could be the reason. Some factors like components burning, charging ports failing, CPU overheating, Graphics chips overheating may be preventing the laptop/iMac from functioning. A logic board repair consists of the engineer finding the problematic components and repairing them or replacing them. Sometimes the logic board may be in a very bad condition which may require a new replacement, this is because although we take the care into finding faulty components, some do not seem inoperative. To save time and to give you the confidence in the longevity of the device, a logic board replacement may be the best solution.