How Variacs Work
If you’re going to work on amplifiers a variac really is an essential piece of kit as it allows you to gradually wind up the mains voltage. Great for those amps which haven’t been turned on for a few decades! This video explains how they work.
Posted by Stuart on February 26, 2021
How to Make a Guitar Amplifier Overcurrent Protection Device
Make this very useful overcurrent protector for those pesky amps which keep blowing mains fuses. Saves you a fortune in fuses plus helps you diagnose the problem.
Posted by Stuart on February 26, 2021
How to Replace Mains Transformer in Fender Super Reverb
A nice slow video where I show you every connection, every solder joint whilst replacing the mains transformer in this Fender Super Reverb. This video applies to most of the old Fenders, so if you’re thinking of swapping out a mains transformer, this is a must watch.
Posted by Stuart on February 18, 2021
How (not) to fix Fender Bassbreaker 15
Crazy insnae design from Fender on this POS Bassbraker 15. Impossible to fix.
Watch as I get more annoyed with every minute that passes!
Posted by Stuart on February 13, 2021
How to Fix Peavey Valveking Royal 8 Resonance Problem
Annoying metalic resonance on this amp on low notes. Turned out to be a common
priblem which I’ve seen on many amps. Follow me through as I diagnose and fix it.
Posted by Stuart on February 13, 2021
How to Bias Fender Blues Deluxe Reissue
Very straightforward job to bias this Fender Blues Deluxe Reissue as Fender have provided a handy bias pot. Note: The original of this amp does not have a bias pot and you have to adjust fixed resistor values.
Posted by Stuart on February 7, 2021
How to Bias Fender ‘The Twin’ Red Knob
Tricky bias job on this Fender ‘the Twin’. Follow me as I walk you through the bias procedure.
Posted by Stuart on February 7, 2021
How to Change HT Fuse on Marshall DSL40C
To save themselved 10 pence in production costs, Marshall require you to
completely dismantle this amp to get at the HT fue. Way to go! In this video I walk you through
the procedure to change it. You’ll need T500mA for the 40W version. T1A for the 100W version.
Posted by Stuart on February 3, 2021
How to Bias Marshall DSL40C
This amp is fairly straightforward to bias as Marshall added two trimpots – but
they’re located inside the chassis so you have to take the amp apart to do it!
Follow me as I walk you through the procedure.
Posted by Stuart on February 3, 2021
How to Fix noise problem on Fender Hotrod deluxe MKIII
Sounds like fried eggs being cooked up in your speaker? This is
a common problem on a lot of tube amps. Follow me through as I diagnose and fix it on this Fender
Hotrod Deluxe MKIII.
