Chest freezer failed to freeze after plugging it back in
With newer refrigerants (since Freon was banned), the seals on the moving parts in the compressor will sometimes dry out and leak if left off for long periods of time. It MIGHT work to recharge it and see if the seals swell up and seal again, but if the seals cracked, it will not, then you have wasted the money for the recharge. Most technicians will simply tell you that it isn't worth doing from a risk/reward standpoint.