Sudden failure & refusal to start

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  • Value For Money

323Murphy-Alt's review of Bosch PMF 180 E Multifunction Tool


“Sudden failure and refusal to start”

Written on: 27/07/2016 by 323Murphy-Alt (1 review written)

Bought this to help with some flooring I was laying a couple of years ago. It worked fine and was well worth the outlay as it saved me lots of time in completing the job.

I have used for several other DIY tasks over the last year and was using to dismantle some cladding from a shed roof when the tool suddenly stopped and wouldn't start.

Having fixed many electrical appliances over the years I felt sure the fault was minor as the tool had not overheated and there was no smell suggesting an internal fault. If you are not competent to work on mains electrical equipment, please seek help from a qualified person

Checked the plug, fuse and cable then with the tool unplugged I opened the caseing. There are about 10 torkx type screws to remove and the case can then be pried apart, there is a small hole on one side of the casing that facilitates this.

Removed the mains wire from the connector block and released from the cable clamp.

The whole motor and electric board can then be removed for inspection. I checked the on off switch for correct operation.

Looking on the web I found a common fault was the crimped connection from the coil windings to the motor board. There are four of these two visible when you open the case and two hidden underneath. Having removed the whole unit, it just lifts out complete, I was able to inspect the crimped connections. I decided to solder all the connections and found that one wire had become detached. Needed to carefully scrape the insulation with a scalpel, tin the wire and add a short piece of thin wire to remake the connection. My metre then showed a connection between each of the four connectors.

Rebuilt the motor into the casing and reconnected the mains cable. When complete I was able to start the motor and the tool has worked for over an hour today finishing my task.

Pity the connection is so vulnerable and would really benefit from a better connection in a device that generates a lot of vibration resulting in stress on this connection

  • Over 1 Year

    Time Product Owned For:

  • Value For Money

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