Electric Weed Eater won't Start - How to fix

This old electric weed eater was working fine one moment and then was dead the next. In this video we take it a part, figure out what the problem is and fix it. A short test afterwards reveals success!
00:00 Introduction
00:30 Handle Disassembly
01:30 Switch Testing
01:41 Handle Reassembly
02:23 Remove Line Housing and Plant debris
03:15 Remove Motor from Housing
03:35 Cleaning
04:05 Signs of Life
04:23 Brush holders
08:13 Flatten Burned Brush
09:10 Reinstall Brush
09:40 Discover Bending Brush Support
09:59 Shoring up the Brush Holder
11:50 Reassemble
13:15 Bench Testing
13:30 Reinstall Line Housing
13:47 Real World Testing

[@NishZero]

Hi buddy where can i find a head, i have the same trimmer

[@thomasdipaolo2349]

What exactly fixes it?

[@breakfixbuildimprove4326]

The problem lay with the brushes. They were not making good contact with the commutator because they were not sliding freely in their housings so the springs could not push them towards the commutator. My weed eater also had a bent support for one of the brush housings which may have been a complicating factor. After the video I made doubly sure that both brushes could slide smoothly in their houses and make good contact. No problems since then and the weed eater is still going strong a year later!

[@thomasdipaolo2349]

@@breakfixbuildimprove4326 thank you fornthe additional details ;)

[@breakfixbuildimprove4326]

@@thomasdipaolo2349 my pleasure. When something breaks I grab the camera and film the troubleshooting process. Sometimes it is not clear what the problem and solution is. 😅

[@juliehouse4501]

did not show how to fixes

[@breakfixbuildimprove4326]

This has already been asked and answered in the comments. The brushes were stuck and not making good contact. Freeing them up got it working.
Good news is that it is still working to this day and gets used regularly.