Washing Machines
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Broke tacho coil wires connector

Asked over 7 years ago 5,264 views
0

Hello,

Yesterday I broke the 2 wires of the tacho coil (the 2 wires that go into the coil). Is there a way to solder back the 2 wires in the coil.

I cut a little of the plastic housing, and inside a side wires going through. Are those wires connected to each other, or is there a begin and an end?

Thanks in advance!

Solution Summary

AI-generated from this discussion

This thread was marked as solved. Here's a summary of the problem and the fix, generated from the discussion below.

Broken tacho coil wires on Bosch WFB4800 motor

The problem
The two wires going into the washing machine motor tacho coil were broken. The user asked whether the wires could be soldered back into the coil and whether the internal wires were joined together or formed the ends of a winding.
Likely cause
The discussion supports that the tacho coil is likely a single very thin wire wound many times, so a direct solder repair to the broken coil wires was considered unlikely to be successful.
What fixed it
The accepted advice was that repairing the broken tacho coil wires was unlikely to work and that replacement of the tacho coil should be considered instead. It was also suggested that the exact Bosch WFB4800 tacho coil might not be available, and that a visually similar coil from another motor might possibly work, but this was not guaranteed and no confirmed compatible part was identified.
Checks to try
  • Model identified as Bosch WFB4800
  • User had cut away some of the plastic housing and could see wires inside
Parts or tools mentioned
  • Replacement tacho coil

Safety: Further diagnosis should be carried out by a suitably qualified appliance engineer.

Cause identifiedGenerated 8 Aug 2026 · AI summaries can make mistakes - read the full thread below.
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3 Answers

Accepted Answer
0
Verified Engineer
Answered over 7 years ago

I wouldn't think you'd have much luck. I imagine it would be one long thin wire wrapped thousands of times. You might be able to buy a new one from Ransom Spares if you search for Tacho coils

Whitegoods Help — appliance repair expert and forum host.
0
Answered over 7 years ago

Thanks for your reply. The problem is that i can not find the tacho for my machine (bosch wfb4800) is it possible to use another brand tacho with the same dimensions etc?

0
Verified Engineer
Answered over 7 years ago

It may well not be available for your motor. It is possible that one of the other tacho coils would work. many motors are essentially the same across brands. But no guarantee. You might find very small differences that make it not fit. If you see one that looks the same and is cheap enough to take a punt on you might want to try but I can't point to one that I know would work.

Whitegoods Help — appliance repair expert and forum host.

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