Capacitors are part of electrical boards and other machinery. There are pretty much no mechanical machines without circuit boards now. Everything runs on electrical components. This is why there are specialists who work on repairing circuit boards, replacing them, reforming components. Keep in mind that doing such repairs on your own, no matter how good you think you are, is a bad idea. It is too easy to ruin the devices.
With this in mind, you still need repairs and don’t know how to do it. This is time to call in the professionals so the circuit boards can be checked out and repairs can be made in stride. Such repairs should go quickly, but sometimes they will be slower than expected. It all depends on whether you choose to have parts fully replaced or just repaired.
One of the most important components in a circuit board for any machine is the capacitors. They are somewhat like batteries in that they do hold a charge. Batteries do too but they do so through an interesting chemical method, lasting for long periods of time with immediate output. Capacitors, on the other hand, hold a charge of electrons through special, layered disks. This charge is held until it is needed and then it releases the charge.
You could think of it as a temporary charge for this reason. Since they are rather expensive components, often they are repaired rather than replaced. The way this works is capacitor reforming performed by a professional trained in the task. They will know exactly how this is done. The process may have to be done offsite, so there can be down time for the machine.
Remember that money is being saved by using the reforming options. It is well worth the wait in order to stay within a budget. It is rare this process fails.