And often times the repair shops themselves indulge in "replace part after part" marathons and see if it fixes the issue. Both for mechanical and electronic/sen

And often times the repair shops themselves indulge in "replace part after part" marathons and see if it fixes the issue. Both for mechanical and electronic/sensor problems. Saw the same with a cost estimate to repair a DeLonghi automatic coffee machine (quote was to replace both broken heater elements, the broken pump and renew seals for 270€) when in fact none of that was broken but the firmware had a bug in one of its stats counters (overrun integer brew counter) that was fixed by a fw upgrade.