Hi,
i am asking for some Help.
I have one of these Nescafe Aeroccino (Milk Frother) things with a bad motor.
The Motor didn´t start anymore and internet is full of users just swapping the motor for a Mabuchi RF-500TB-12560.
So i got a few of these from Banggood.
I swapped the motor and now i have a new fault condition.
In a working Frother you would press the start button, it will light red and work for a few minutes.
If you press longer it will light blue and just mixup the milk.
With the new Motor it just starts for a second (red blinks) and the stops, same with longer press.
First i thought, the motor is faulty but with 2 other motors i have the same error.
With no Motor the device works, with a short (instead of the motor) it works (but burncs BC817-25).
There is a tiny Atmel, the motor driver is just the BC817-25 some Diodes for Motor and 9V.
The BC817 is driven by the Atmel.
I measured the old and new Motor, both are within the specs for a Motor with 0 RPM.
The Diode and BC817 on the top left have been remove/checked and resoldered for testing.
Can anyone think of other failure?
I add a picture of the PCB.
Thanks in advance
Jürgen
i am asking for some Help.
I have one of these Nescafe Aeroccino (Milk Frother) things with a bad motor.
The Motor didn´t start anymore and internet is full of users just swapping the motor for a Mabuchi RF-500TB-12560.
So i got a few of these from Banggood.
I swapped the motor and now i have a new fault condition.
In a working Frother you would press the start button, it will light red and work for a few minutes.
If you press longer it will light blue and just mixup the milk.
With the new Motor it just starts for a second (red blinks) and the stops, same with longer press.
First i thought, the motor is faulty but with 2 other motors i have the same error.
With no Motor the device works, with a short (instead of the motor) it works (but burncs BC817-25).
There is a tiny Atmel, the motor driver is just the BC817-25 some Diodes for Motor and 9V.
The BC817 is driven by the Atmel.
I measured the old and new Motor, both are within the specs for a Motor with 0 RPM.
The Diode and BC817 on the top left have been remove/checked and resoldered for testing.
Can anyone think of other failure?
I add a picture of the PCB.
Thanks in advance
Jürgen
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