Mr. Coffee IDS77 Grinder Thermal Fuse Replacement

Written By: James Finch

Difficulty

Moderate

Steps

Time Required

No estimate

Introduction

My Mr. Coffee Grinder IDS77 stopped working. The lights flash on the front and I can change the settings. However, the motor doesn't run.

What I found was the thermal fuse was open and needed to be replaced.

Note some have just directly soldered the wires and someone also bridged using a piece of solder diameter about 1 mm and about 30 mm long.

Thanks to Saliya's Blogs, https://esaliya.blogspot.com/2013/04/rep..., for sharing the information. I'll transcribe here.

Just remove the three plastic hole cover knobs, which you can simply pull out using tweezers or by lifting one side with a sharp point like that of a knife.
Once removed these knobs look as shown.

Get a small flat head screw driver and remove the three screws. Then you can simply take out the motor compartment.
You'll need to pop the button panel to find a bolt holding the circuit board. You'll be able to figure out hopefully.
Once the motor is out you can see the thermal fuse wrapped inside the yellow tape covering the motor winding as shown.
Cut the pins of the fuse and it's shown left to the motor.

Now it's time to find a replacement. The original thermal fuse comes from China and here's a link for the TAMURA TAM Thermal Fuse Cutoff 127℃ 250V 3A H4X Square Temperature Switches. A close up picture is shown.
An alternative thermal fuse from RadioShack, which in fact is cheaper (~$1.40) than options from ebay.
The Radio Shack thermal fuse has a high ampere rating, but from what I read having a higher ampere rating will be suitable. The temperature is what is important.

Conclusion

To reassemble your device, follow these instructions in reverse order.

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