When it comes to repairing a MacBook Pro, replacing the logic board is often the last resort. This is because it is an expensive part of the computer, as it houses the CPU, graphics chip, RAM, and SSD. In some cases, the damage may be too extensive for a repair to be successful. If you have gone to a repair shop and the solution doesn't work, you shouldn't be charged for the failed attempt.
It's worth a try, especially if your MacBook Pro is relatively new. Apple may still cover the logic board repair service in this case. The new MacBook Pro includes 90 days of technical support and a year of limited warranty for hardware repairs. This service is used to repair the logic board (motherboard) of Mac laptops using microsoldering and analysis techniques to replace specific damaged components; it is not a logic board replacement service.
The reduced space and improved graphics of the MacBook Pro can cause parts to degrade over time. Replacing the logic board is a complicated process and should only be attempted by those with experience in repairing computers. This is not a guaranteed solution, but rather an attempt to repair boards that would otherwise have to be replaced for several times the cost of a successful repair.