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Fixing Panasonic bread maker weak mixing action

Does your Panasonic Bread Maker have a weak mixing action, i.e. you can hear the motor power up but the paddle get’s stuck, or are your loaves turning out really flat?

You can test by putting the machine into pizza or dough mode, pressing start and seeing if you can easily hold the paddle when it turns?

You possibly need a new belt or more likely a new motor run capacitor.

I have an SD255 which was really struggling to mix the dough. After some troubleshooting, I worked out it was the motor run capacitor that was faulty.

Original Capacitor

Model: SSE SMPA, 3 microFarad +-5% 450VAC 50/60Hz 40/85/21 EN60252-1

Dimensions: 45 x 31.5 x 20.2mm / distance between the pins is roughly 38mm

Looks like this is made by Shiny Space Enterprise, hence the SSE. It is a Metallized Polypropylene Film Capacitor

Safety AgencyTUV
Rated Voltage420 / 450VAC
Capacitance Tolerance±5%
Temperature Range-40 ~ +85?
Rated Working Frequency Range50 ~ 60Hz
Dissipation Factor (DF)? 1% Max. Measured at 1kHz 20?
Between Terminals (T-T)Rated voltage x 175% VAC 10sec
Between Terminals and Case (T-C)2000VAC, 60sec

Replacement Capacitor

To replace the cap I bought a 3mF (microFarad) 450V motor run capacitor from TecsaReco for R16.13 – Part No. RCAP3 or you can get from RS-Online RS Pro 3?F Polypropylene Capacitor PP 450 V ac ±5% Tolerance Through Hole for R19.57 each (min 2)

Dimensions: 36 x 14 x 29mm

Shaft Seal Replacement – Viton Oil Seal

This is for a Kenwood machine but it will be similar for the Panasonic


Panasonic Bread Maker Manuals


Either enter your Model Number, you can find it on your machine or select Home Appliances > Automatic Bread Maker > then your model number

7 thoughts on “Fixing Panasonic bread maker weak mixing action”

  1. Thank you so much. The bread rose like it did when the machine was new. It was a challenge to solder the short pins that were much closer together than the original one but after many tries the solder caught. Not easy to do but not impossible. If only we could find a replacement with longer pins. So a few bucks and my SD 255 is like new again!

  2. The exact one in the link. From RS components. The width of the original is 45 but the replacement one is 36mm and the pins are only 4mm Long so have to do some pin Gymnastics to get it thru the PCB holes. I think you can drill new holes but I did not have the equipment handy.

  3. Fantastic information thank you. Yes the Capacitor is a bit of an arse to fit however it works and has saved me having to buy a new one.

  4. My breadmaker was displaying the same symptoms as above but the problem turned out to be the drivebelt that was deteriorating and had slipped partially off the pulley. New drivebelt solved the problem.

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