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Introduction

Sometimes the motor stops, heating still is in function. You can fix this in 15 min.

  1. Heat up to 50°C/120°F in oven in order to make the clips inside smooth.
    • Heat up to 50°C/120°F in oven in order to make the clips inside smooth.

  2. Open the bottom with a strong screwdriver. Be careful not to break the clips inside Open the bottom with a strong screwdriver. Be careful not to break the clips inside
    • Open the bottom with a strong screwdriver. Be careful not to break the clips inside

  3. OPEN ALL THE TABS

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  4. Pull out the circuit board and the motor. After module is removed the on/off pad must be pressed in/through Pull out the circuit board and the motor. After module is removed the on/off pad must be pressed in/through
    • Pull out the circuit board and the motor. After module is removed the on/off pad must be pressed in/through

  5. Check motor operation by pulling connector and applying 9V with an external power source (battery or bench supply) to the plug. If the motor turns with reversed polarity then proceed by swapping black and red contacts leading to the motor. With a little flathead screwdriver press the contact spring, pull out the cable. If the motor only turns by applying external power and a little twist or not at all, only solution is to replace the motor. Mabuchi RF-500TB-12560 is readily available on the internet.
    • Check motor operation by pulling connector and applying 9V with an external power source (battery or bench supply) to the plug.

    • If the motor turns with reversed polarity then proceed by swapping black and red contacts leading to the motor. With a little flathead screwdriver press the contact spring, pull out the cable.

    • If the motor only turns by applying external power and a little twist or not at all, only solution is to replace the motor. Mabuchi RF-500TB-12560 is readily available on the internet.

  6. Carefully embed the thermal contact in conducting paste. Then press bottom into body until you hear a clic threee times. At last switch must be pressed in.
    • Carefully embed the thermal contact in conducting paste. Then press bottom into body until you hear a clic threee times. At last switch must be pressed in.

Conclusion

To proof the function use water.

19 other people completed this guide.

VauWeh

Member since: 10/19/2015

99,281 Reputation

116 Guides authored

31 Comments

Bravo, vielen Dank. Hat bestens funktioniert, in 5 min war alles erledigt!

jschiedermair - Reply

Many thanks!

I couldn't believe reversing polarity would work, but it did!

J.

jeroenvaneijk - Reply

Yes, it's a miracle. :-)

VauWeh -

If reversing the wires solves your problem then it was just a loose or poor contact at the switch causing the problem.

You are not switching polarity when swapping the wires. Like a light switch, it only serves as a connection/disconnection point for electrical flow.

ekao -

Gibt's da auch eine technische Begründung dazu, warum der bloße Tausch der Motoranschlüsse den Fehler behebt?

Ich würd's nur gerne verstehen.

Georg Sunkler - Reply

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