The Guitologist | 2 years ago

CLICK HERE to see the video of the CLONE BUILD: https://youtu.be/zk2vm_4NMkI
In this video we will show the ENTIRE troubleshooting and repair process on a vintage 1970s guitar pedal - the Big Muff Pi. This one was completely dead, not passing any signal when switched ON. We will fix that issue and then fix the issue of extremely LOW OUTPUT, LOW VOLUME, which seems to be a common thing with many of these 70s Big Muffs. We will look at the BC239 transistor and 1N4148 clipping diode circuit and schematic along the way and discuss what many of the circuit components do and how they work to shape the sound. Finally, in our usual fashion, we will demo the completed pedal through my Dinosaur solid state bench amp, because it's kinda funny.
Thanks to the following website for their helpful information: http://www.kitrae.net/music/big_muff_guts.html

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♠STUFF I USE
-Mustool Handheld Oscilloscope: https://usa.banggood.com/custlink/DKDY7N94Gf
-5A Variac: http://amzn.to/2FNWthU
-Jameco Isolation Transformer: https://amzn.to/2PRv1Fa
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-Black and Decker Heat Gun: http://amzn.to/2DWpDhr
-Geekcreit® LCR-T4 Mega328 Transistor Tester http://bit.ly/2J9uLSA
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-Solderless Breadboard: http://bit.ly/2stkVAq
-Breadboard Jumper Wires: http://bit.ly/2JowaEh
-Geekcreit® XR2206 Function Signal Generator DIY Kit http://bit.ly/2LYBvkb
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-Max Professional Cleaner and Lubricant: https://amzn.to/37R3JY8
-Deoxit Fader Cleaner: https://amzn.to/2LPwtsE
♠RECORDING
-Sony AX53 Camcorder https://amzn.to/3MznuYp
-Canon HF M500 Camcorder https://amzn.to/3khlV5x
-Andonstar USB Microscope: https://bit.ly/2q8QIWz
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-Tonor Q9 USB Condenser (for voiceovers) https://amzn.to/39fvmQp
♠RECOMMENDED BOOKS
-RCA TUBE MANUAL http://amzn.to/2GOBVqS
-DESIGN AND CONSTRUCTION OF TUBE AMPLIFIERS: http://amzn.to/2HSNMne
-Designing Tube Preamps for Guitar and Bass: http://amzn.to/2DK5tmt

#electronics #repair #guitar