Computers

Also see:

Electronics

One of my first memories is watching my father fix an old valve TV in the early 1970s. I've always been fascinated by how it was possible to create electronic devices, and how it's possible to extend the lives of those you've bought if you have an ability to understand a little about electronics.

Consumer electronics reviews

LED-2 Video projector - inexpensive Chinese video projector

Digital Video Converter - a stand alone converter for old video tapes.

NBOX - Put home products or downloaded video on your TV.

The Battery Manager Ultra - a smart battery charger.

Computer projects

Samsung ML-1640 laser printer - problems and fixes.

Home audio / video projects

My home made subwoofer.

Repairs

ABB Power-One Aurora Inverter - this device failed after six years of use with the common E031 error message. I repaired it and it now works perfectly again.

Samsung ML-1640 laser printer - These fail with a flashing red light. It was easy to repair and has worked for many years after most of them were thrown in the waste.

Proford DC18 digital clock - a typical 1970s digital clock which stoppped working after nearly 40 years of continuous use. A simple repair and it's now working again.

NEC PC8201a - an early 1980s laptop. Repaired by replacing the leaking backup battery. It's now good for another 30 years of operation.

Quad 33 / 303 amplifier - Classic Quad audio amplifier. Repaired and modified to be more useful in the 21st century.