Marshall G15R CD Guitar Amp Hum Fix

Investigating and fixing what's causing the 100Hz hum in my Marshall practice guitar amplifier. // Kindly sponsored by my favorite PCB manufacturer PCBWay! https://www.pcbway.com/ Marshall G15R CD Schematics: https://elektrotanya.com/marshall_g15rcd.pdf/download.html Peak Atlas ESR70 ESR/capacitance meter*: US: https://amzn.to/3DJIWXY UK: https://amzn.to/3EaugT7 DE: https://amzn.to/3tdrsOS Teslanol T6 Oszillin contact cleaner*: DE: https://amzn.to/3TkKT2G UK: https://amzn.to/3Ulr10X CAPACITOR LIST: 2x 2200uF 35V 2x 100uF 63V 1x 47uF 25V 3x 10uF 63V 2x 22uF 100V TIME STAMPS: 0:00 Introduction 1:49 Sponsor Message 2:12 Taking the amp apart 3:27 A look at the electronics 11:09 Mains hum 12:20 Replacing the capacitors 21:37 New thermal compound 23:22 Test run 25:16 Cleaning the potentiometers 25:40 Reassembly & Testing 27:19 Bonus silly ground fault! 29:59 Final testing 30:24 Thank you & good night ----------------------------------------­------ MUSIC by FOCUS 10 https://focus10music.bandcamp.com EQUIPMENT AND TOOLS I USE: https://kit.co/janbeta * MERCHANDISE: https://janbeta.creator-spring.com TWITTER: https://twitter.com/thejanbeta PATREON: https://patreon.com/janbeta KO-FI: https://ko-fi.com/janbeta WEBSITE: https://www.janbeta.net TWITCH: https://www.twitch.tv/thejanbeta YT CHANNEL MEMBERSHIP: https://www.youtube.com/channel/UCftUpOO4h9EgH0eDOZtjzcA/join Thanks for watching! This video was sponsored by PCBWay. * Stuff marked with "*" contains affiliate links. You don't pay anything extra and I get a little commission from everything you buy through the links (even if you buy something different there). #JanBeta #Marshall #Amplifier #Guitar #PCBWay