I have little problem with this old bosch dishwasher.
I changed the turbine of the recirculation pump because the dishwasher loaded little water. The plastic rivets of the turbine had broken (image below). I replaced the broken piece and now the dishwasher correctly rotates the "propellers". In this model there are three programs: 70 °, 50 °, 35 ° and the prewash. The problem is that if I start the fast program at 35 °, after a few minutes, one or more relays of the logic board begin to quickly switch on and off and the salt, rinse aid and selected program LEDs, start flashing (video below). If instead I try the 50° program, the dishwasher seems to continue washing endlessly, in both cases the water remains cold. The only program that starts and ends correctly is the prewash. I have already changed the resistance and the thermostat, cleaned all the pipes and the water inlet. Could it be a logic board problem at this point? I have checked the circuit board and I don't find any damaged or broken components. The logic module is the Siemens 5wk57651.