Among Bosch dishwashers that still feel modern, the SHEM78W55N is about the oldest. It comes from the SHEM generation of the 800 Series and is stainless, with a deep tub, a third rack, a softener built into the tub and condensation drying. Bosch rates it 42 dBA for 16 place settings.
Owners expect a machine like this to act like a current model, and are surprised that features which arrived later are missing. In repair terms it is a solid, conventional Bosch with a full parts supply behind it.
With age we meet worn door springs and cables on the heavy insulated door, wear at the front ends of the third-rack runners, and a drain pump that slows until water lingers in the sump.
A decade or more of everyday use is normal when the filter is cleaned and the softener kept topped up, with ordinary wear parts swapped as needed.
Either the springs have gone slack or a cable has stretched. A door this heavy should be looked at soon, to protect the hinges and to avoid it dropping on someone's toes.
It predates features such as current app control. The washing hardware is conventional and well supported, so what it lacks is convenience, not cleaning ability.
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