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Quick News.............

03/06/17 - I'm building a new workshop!......with a bit of luck I'll manage to video some of the work and how I designed the layout to suit my needs.

21/04/17 - Finally!, the PDVS2 Precision Digital Voltage Source is available to buy. Check it out here.

20/03/17 - Due to huge amounts of spam I've changed my email address, so if you try to contact me via ian @ ianjohnston.com it will bounce back. Use the contact page on my site to contact me.

Latest Articles.............

Video Blog #031 - Sharp GF-6060 Radio Cassette Player Repair

Repair of a Sharp GF-6060 Radio Cassette Player from Ebay, and with an MP3 ending!
Date: 20/05/2017

Video Blog #030 - Fluke 51 II Thermometer Repair

I purchased a cheap Fluke 51 II digital thermometer from Ebay missing the rubber keyboard, my idea to laser cut my own and use micro switches.
Date: 16/04/2017

Video Blog #029 - Alesis 3630 Compressor Repair

This Alesis 3630 Compressor sits below my Tv in the house between the satellite receiver and my audio amplifier, but it developed a fault. In this video I analyse the problem, effect a repair and do some other work to the unit.
Date: 25/02/2017

Video Blog #028 - Dataman S4 Programmer Restoration

I purchased a "Solartron S4 Programmer" which appeared to be a much modified Dataman S4 Programmer. In this video I tear it apart with a view to restoring the S4 back to it's former glory, just as it left the Dataman factory.
Date: 29/06/2016

Video Blog #027 - Solartron 7075 Digital Voltmeter Repair & Modification

I purchased a Solartron 7075 7.5 digit voltmeter from Ebay and decided to make some front panel modifications and also recalibrate the unit.
Date: 12/06/2016

Video Blog #026 - Ultrasonic PCB Cleaner Flux Removal

A quick 5-minute (maybe 10!) video demonstrating my technique for cleaning flux off newly assembled pcb's using my ultrasonic cleaning tank.
Date: 20/04/2016

Video Blog #025 - QFN Reflow Repair

A quick 5-minute video demonstrating my technique for QFN IC SMD package repair on a circuit board that I had just reflowed in my oven but that had resulted in some short circuits.
Date: 17/04/2016