How to Fix Bias Problem on Carvin Legacy 100W (Home Brew)
Paul brought this amp to me which he had built himself. Trouble is, the power valves kept red-plating. That’s nearly alwayys a bias problem – but the solution turned out to be something unusual. Follow me through as I diagnose and fix his amp.
Posted by Stuart on January 29, 2021
How Valve Tube Guitar Amplifiers Work Part 3
Part 3 of my tutorial series on how Valve Amplifiers work.
In this part we look at how a valve works.
Posted by Stuart on January 27, 2021
How to Fix Marshall Valvestate VS 580 – No Sound
These Marshall valvestates are great sounding amps but they are fault-prone. A nasty fault on this amp which took me a while to fix. Follow me through as I daignose and repair the amp.
Posted by Stuart on January 21, 2021
How Valve Guitar Valve Amplifers Work Part 2
Second in my educational series of videos on how valve guitar amplfiers work. In this video we explore the power supply.
Posted by Stuart on January 21, 2021
How to Fix Blackstar HT5 Hum Problem
Horrivble 50Hz hum and very distorted low level guitar output on this Blackstar HT5R.
Horrible amps to work on. It takes me a while to track this down but I get there eventually!
Posted by Stuart on January 21, 2021
How to clean and service pots on guitar amplifiers
It’s basic maintenance! Tired of scratchy pots with dead spots on your guitar amplifier? Here’s the PROPER way to clean them.
Posted by Stuart on January 21, 2021
How Valve Guitar Valve Amplifers Work Part 1
First in a series of instructional videos about how a valve guitar amplifier works. Part 1 we take a video tour top and bottom side of two amplifiers.
Posted by Stuart on January 21, 2021
How to Bias Marshall JMP 100W Super Lead
Lovely classic and simple amp. Here’s how to bias it.
Posted by Stuart on January 21, 2021
How to Fix Fender Blues Junior Arcing Problem
Nasty fault on this Fender Blues Junior. Two tracks had arced across. Lots of burning!
Posted by Stuart on January 21, 2021
How to Bias The Fender Blues Junior
A tricky amp to bias, let’s be honest. I’ll walk you through the process in this video.
