DeLonghi ESAM 6900.M Prima Donna - No Power

Hi @paulmathias

Looking at images of the switch used in the model it looks like it is a double pole, single throw type i.e. two inputs and two outputs.

In your machine this means both the Active and the Neutral would be connected through by the switch being operated

With the power disconnected from the machine and with the DMM connected between one input terminal and the appropriate output terminal, when the switch is operated there should be a "beep" heard from the Ohmmeter. Then connect the Ohmmeter across the other input and output terminals to make sure that when operated they make as well i.e. beep heard.

Check that the beep works first by shorting the Ohmmeter test leads together. If for some reason the meter doesn't beep when its test leads are shorted together then the meter should measure 0.00 Ohms (meter set to Ohms x1 scale) when connected across either of the input/output connections with the switch operated

If not at all or if only on one input/output connection then the switch is faulty and will need to be replaced as both need to be working for power to reach the power board.

Search online for Delonghi ESAM 6900.M power switch, to find suppliers that suit you best.

Note: It may be just a mechanical fault in the switch i.e. broken or perhaps burnt out contacts, although hopefully not the latter as usually contacts shouldn't burn out so there may be something else that is wrong. I don't know the machine but can you turn off the machine first using the control panel controls and then turn off the power switch? If so if you always turned it off using only the power switch then this may be a contributing factor to the contacts burning out, but this is only a guess. You would have to open the switch first, to see what the problem is.