Donate to IanJohnston.com using PayPal here, or pledge a donation via Patreon here.
I like creating electronics related YouTube videos. I mostly buy faulty gear from Ebay and make a repair video of it,
but it's expensive and so with your help maybe I can continue to do so.
If you have any faulty test gear you don't want or going cheap then please contact me. Your support would be greatly appreciated.


Visit my YouTube Channel, or my Odysee Channel, plenty of electronics repairs,
including test instruments from the simple to the complex.
Lots of fun, lots of education & lots of practical demonstrations.

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

Video Blog 147 - Fluke 45 Dual Display DMM Battery Retrofit

Donated by Richard to the channel, he requested I try and see if I could get the battery option working on this Fluke 45 DMM.
Date: 12/12/24

Video Blog 145 & 146 - Keithley 2001 7.5digit DMM Repair (2nd) Part 1 & 2

A super kind donation from a subscriber, this K2001 wasn't far away from being repaired by the owner but which then took a turn for the worse and now doesn't power up at all.
Date: 07/11/24

Video Blog 144 - Advantest R6581T 8.5digit DMM Display Upgrade to OLED

I bought this R6581T with a very dim, verging unusable VFD (display).....time to change it out for an OLED.
Date: 26/10/24

Video Blog 143 - Agilent E3633A Bench Power Supply Repair (revisit!)

I repaired/renovated this PSU 3 years ago and a few weeks ago it started giving me a wierd Error Code 718.
Date: 20/10/24

Video Blog 142 - Channel Update - 3 Software Projects

I've had time away from hardware to work on 3 separate software projects, 1 professional and the other 2 home grown. In this video I run through the home grown ones.
Date: 25/09/24

Video Blog 139/140/141 - Matrix MCR-3200 LCR Meter Repair - Part 1, 2 & Follow-Up

Recieved as a faulty return from Matrix (Amazon) it was pot luck as to what condition the unit would be in or what the fault might be!
Date: 31/07/24

Video Blog 138 - Tektronix 2430 Digital Oscilloscope Repair

Donated to the channel by Dominic from England, this scope had a few errors before it went BANG!
Date: 02/07/24