The battery on my 2013 Vineyard tractor died in April, and I paid for a tune-up when it was replaced. The battery died again this week, 3 months later. Turns out the alternator is shot. Should the mechanic have checked the alternator during the tune-up? I pay a service fee each time they come here to check out and repair the equipment - and they are now here twice (potentially) for the same problem. Thoughts? Excuse me if this seems like a novice question - it is. I inherited the responsibility for the farm when my husband passed, so I am on a steep learning curve. thanks for you insights.