out of choice, would never have a condensing tumbledrier....
one of me daughters has one, takes ages to dry clothes,
whereas, our old normal tumble we have had fer 12 or more years, get well used, and vents out an adjacent wall.
couple years ago it stopped working,
so armed wiv me leccy screwdriver as op sez, took it all apart only to find the sprung earthing strap had rubbed & cut of the spigot that runs in a bearing/holds drum in place.
oh dear said I, get the mig welder out!
spot welded it, spun the drum, looked good, then welded the little fecker back propper.
been working brillient still ever since.
while it was all apart, Indeed it was In need of hoovering out,
and I replaced the drive belt at the same time.
12 years, or more, still going strong,
and its only a CREDA auto sensordry......
Oh, plus a little help from Mr MIG toooo :tea: