A very good friend asked if I could look at his Fein MultiMaster power tool that was not working correctly. The mains lead connection is intermittent. He had taped it to a position on the device where it would work 90% of the time.
I tested the unit and it was indeed traced to a faulty mains lead. Disassembly was simple, just 6 Torx screws and the lead was connected via pushin connectors. Removing it and checking the lead for continuity showed the lead was broken. I pulled the broken neutral core out which showed where it was proken. Trimming it, cutting back the insulation and tinning the wires enabled me to push them back into the connector. Reassembly after cleaning and testing proved the device was fixed OK.

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Content:

00:00 Introduction
01:10 Testing begins
01:34 The fault appears & initial diagnosis
02:27 Dismantling
05:00 We're in!
05:53 Disconnecting the mains lead
07:00 Testing the mains lead for continuity
08:00 We find exactly where the fault is
08:22 Preparing the lead for refitting
09:00 Advice on stripping back the mains lead outer rubber sheath
12:43 Tinning the inner conductors
14:00 Refitting the conductors to the connector
16:00 Reassembly
17:48 Final testing
18:04 Cleaning the horrid gaffer tape residue
19:41 All done! Thanks for watching.