Electronics repairs & projects, test gear, practical demos & software dev.I buy faulty gear, fix it, and share what I learn. Your support helps me keep going. YouTube · Odysee · X (Twitter) · My Github · Contact Got faulty test gear you don’t want—or going cheap? Contact me and I’ll give it a second life and make a YouTube video of the repair. |
I post on X (@IanSJohnston) almost daily—follow for what I’m up to. |
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Latest Articles.... |
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Video Blog 177 - Fluke 8846A Multimeter Repair/RevisitI last had an attempt at repairing two 8846A's 3 years ago, and in this video I revisit one of them.....can I fix it?Date: 27/02/25 |
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Video Blog 176 - HP3478A Multimeter Repair & TFT ConversionHP3478A Mulrimeter Repair & TFT ConversionDate: 15/02/25 |
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Video Blog 175 - HP3457A Multimeter TFT ConversionOff the back of my recent ADCMT SMU TFT conversion I thought i'd take a look at trying to do the same on my 3457A.Date: 05/02/25 |
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Video Blog 173 & 174 - ADCMT 6243 Source Measure Unit TFT LCD Upgrade Parts 1&2I bought a 6243 SMU in the hope I could retrofit my R6581T TFT upgrade to it!Date: 20/02/26 |
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Video Blog 171 & 172 - WinGPIB, Major upgrade, the USER tabI've updated WInGPIB with the ability for users to create their own instrument control tab withing GPIB via a simple text based configuration file.Date: 18/12/25 |
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Video Blog 169 - EEZ BB3 Power Supply Repair (again!)This is the 2nd time my BB3 Bench Power supply has developed a fault, this time errors on the display on startup.Date: 19/11/25 |
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Video Blog 167, 168 & 170 - Wavetek 1281 8.5" Multimeter Repair - Parts 1, 2 & 3I received a Wavetek 1281 for repair, the owner having made some attempts prior to sending to me.Date: 27/11/25 |
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Video Blog 166 - Electronics Related CalculatorsLots of work to my website lately, including updating a lot of the electronics related calculators on my website.Date: 03/11/25 |
