This. I already anticipated such for the cheaper dryer in the one house, and simply bought an equivalent replacement that is already in the back of my wife's SUV. I was going to swap them out this weekend, but those tenants came down with whatever winter bug is going around and asked me to postpone it until they feel better My plan is to bring the old one back to diagnose in my own garage, and if it's worth fixing, then to order and install parts, and have my wife sell it online to recoup a little money. If it seems to be toast or expensive or too much of a headache, then I'll just have our junk guy pick it up.
The dishwasher I'll have to check out myself. (I suspect there's a clog or stuck bone or something based on what was described.) I always take a crack at repairing things myself first, and only if it's beyond what I can solve or will be a major PIA, do I call one of my contractors or repair guys. I was just over at that place last week, too, replacing a leaking garbage disposal, re-caulking the kitchen countertop, and installing a blackout blind. People think being a landlord is just about collecting checks, but it's more like being an HR person to vet applicants, plus going the extra mile to keep good tenants happy, while having an on-call side job, and having long, expensive, unseen periods of personal financial investment and risk, plus a ton of sweat equity and headaches when purchasing and renovating new properties... and we have invested a TON of personal sweat equity over the years. (I couldn't even begin to count the number of evenings and weekends.) But, Mrs. GH and I take a lot of pride in our properties and will only own and rent solid middle class houses to quality applicants, and we want nothing to do with being slum lords or anything related that would drive landlords there.