Kaput Bosch AL1450DV Drill Battery Charger

An old Bosch battery charger gets a new lease of life.

These chargers often lead a hard life, working in dusty, hot and noisy conditions, so I guess many of these fail in time.

This Bosch unit is fairly common among Bosch DIY drill sets and this one had died catastrophically.  With the power applied, this one refused to give the slightest charge to a drill battery, once plugged in.

After some basic testing, I decided to change four components which would have caused the other to fail in a ‘domino effect’.  The cost of the replacement parts was just shy of £10, but definitely worth saving since second-hand units seemed to be changing hands for £40 on eBay, with their condition largely unknown.  The parts (two resistors, MOSFET transistor and diode/ transistor) were readily available online.

I recorded a short video to help others who might have a similar problem with theirs…

 

fixitworkshop.co.uk repair service and blog

The diary of a tinkerer: Stories, advice, tips and sometimes the odd failure to inspire your own repair.

The diary of a tinkerer: Stories, advice, tips and sometimes the odd failure to inspire your own repair.

Update July 2023:

Matt Marchant is also appearing in Retro Electro Workshop, on Yesterday Channel and UKTV Play, alongside Rob Howard and Shamil Joomun.

  1. I write about things I fix and even those I can’t
  2. I offer a repair service for a small fee
  3. I occasionally volunteer at Repair Café and similar events in Sussex and surrounding area

The tinkerer at FixItWorkshop.co.uk is Matt Marchant

I love repairing things and hate throwing things away that can be saved. There’s far too much waste in the world.  Many things that can sometimes appear unrepairable, are indeed repairable, with a little tinkering. I want to encourage people who doubt their own ability to repair their things, to give repair a go.  After all, if ‘that thing’ isn’t working, grab a screwdriver, take it apart and investigate.  What have you got to lose? I’ve been tinkering with bikes, cars, coffee machines, toys and vacuum cleaners and pretty much anything that can be dismantled since I could hold a screwdriver.  I’ve worked for BT as a senior engineer, and I’ve studied design, business and electronics. Enjoy the repair diary of a tinkerer.  I hope it gives you a nudge to repair your broken thing.  If you can’t, I might be able to help.

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