Wii Error

'Is the Wii dying?" This is what my kids are asking me. They've been getting this Wii error that the disk couldn't be read. I cleaned the disk and made sure that there are no fingerprints. It'll work for a couple of days and then out of the blue, the error shows up again. It's probably time to have it serviced in which case, I hope the service charge is reasonable and doesn't cost an arm and a leg. We've had the Wii since 2007 and dh said that it probably needs some cleaning inside. I hope he's right. Considering the price of the unit plus the different Wii accessories we bought, it'll be a shame if it turns out to be a major problem.