Tunze 6105 not working

[FishN00b83]

I have been fighting one of my pumps for a couple of months now. I have tried the vinegar soak with the pump completely disassembled, I tried unplugging and plugging back in, I checked the connections, and I can't think of anything else to do. I have had these pumps for about 6 years without any problems once so ever. Is there anything I could do at this point to possibly get this one to work again?

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[rvitko]

What does it do? Main thing I can think of is a loose shaft, assuming it was made after Nov 2011 the shaft should be rigidly fixed in the motor and the drive unit spins on the shaft. It is not impossible the motor is starting to fail electrically, the capacitors on the circuitry generally have a life span of 7-8 years. In that case a new 6105.100 motor should solve the problem and I would generally suggest also replacing 6105.701 at the same time.