Sterling Power Products Pure Sine Wave Inverter repaired

Inverter, repaired in the workshop

For those wondering what an ‘inverter’ is, let me give a quick explanation:  It allows one to use a mains operated device on the move, using a power supply from a motor-home, car or boat, as an example.  An inverter ‘inverts’ a smaller voltage to a larger one, usually for most applications.  Most inverters sold turn either 12 or 24VDC to 240VAC or 110VAC.

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FixItWorkshop, April’17, Worthing, Sterling Power Products Pure Sine Wave Inverter Pro Power SB 600W

The owner of this one had accidentally connected the input wires the wrong way around, effectively reversing the polarity.  Not good.  Upon hearing a little ‘pop’ the owner quickly disconnected the power!

Having never worked on an inverter before, I turned to the manufacturer for advice.  Sterling Power (UK) were not able to supply any product information on the phone nor via email and were generally not very helpful at all.  They did offer a very reasonable 25% discount on a replacement, but were not able to offer much else to save the one I had in the workshop.  Never mind.

Back to the problem.  Checking the basics, the ‘accident’ had appeared to knocked-out three 25A soldered PCB fuses.  Temporarily by-passing the fuses revealed a working unit, so replacing the defective fuses was a good idea at a very reasonable £1.50.

The fuses are mini-blade 25A automotive fuses.  Once removed and the new ones soldered in place, the unit worked once more.

Cost of parts, £1.50, cost of replacement unit, circa £160.00.

I’ve also covered this repair overview in a video:  https://youtu.be/nmnSRwQdSvY

 

fixitworkshop.co.uk repair blog

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

The tinkerer at FixItWorkshop.co.uk is Matt Marchant

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

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.  Afterall, 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. 

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