Has anyone repaired the severin sm 3584 and has a picture of the board with capacitors and resistors, because my fuse resistor marked on the board with the symbol RF burned out and I can't find anywhere data about the parameters of this resistor and it is so damaged that you can't read from it what capacitance it has. I wrote to severin but no response. Please help.

This resistor has 1,2 cm large

⟐ Commented February 08, 2026 at 4:49 MST

I have an Inventum MK750 milk frother. It's one that has a base with the power supply and electronics, and a detachable top, to pour the milk in. When the top-cup is put on the base, it presses a switch so the base knows the top-cup is placed on the base.

Problem

The device is dead. Normally the LED's in the buttons on the side light up, but they don't. There is no response when pushing the buttons on the side ~(one for warm and one for cold frothing). And also no response when the top-cup is being placed on the base, and presses the detection switch.

What I tried already

• I checked the PCB, components, connectors and switches for corrosion. There was just a little bit, but when removed the frother was still dead.
• I used a multi meter to check if there is 230V coming in = OK.
• There are 2 fuses, one just after the 230v coming in going to one point of the heating element, and the other coming from the relay to the other point of the heating element. Both fuses measured for continuity = OK.
• On the heating element I measured the resistance. It is 90 Ohm. (I don’t know what it should be)
• Since I read that with a lot of milk frothers the relay can go bad, I ordered a new one and replaced it. Result = still dead.

Question

What can I still try or do?

⟐ Answered December 13, 2025 at 12:47 MST

⟐ Edited January 21, 2026 at 17:47 MST

My Instant milk frother stopped working and I would like to repair it.

The first hurdle is that there are some deep proprietary screws that I can't reach with my IFIXIT Pro toolkit. See attached photos. Any suggestions?

Once I am able to open it, I may need further help. I am new to fixing things, but I like the idea very much. Thank you for your support.

Marco

⟐ Edited by author April 23, 2024 at 10:18 MST