WARNING: first of all disconnect an amp from the power outlet!

Please be careful - tube amps can hold a serious amount of electrical charge that can cause injuries or even death. Avoid touching any wires or contacts with your bare hands or instruments that have no reliable insulation.

Let's start by removing the rear chassis screws. All of the screws we are going to deal with work nicely with a PH2 bit.

Then remove two side screws that also hold the amp chassis in place. Those are 4 x 30 mm btw.

Below the chassis you'll find 4 more phillips screws holding a rear cover in place - remove them as well.

Now it's time to remove the nuts on the input jacks and our broken volume pot - I used pliers to do that, but it is advisable to use a small adjustable wrench in order to avoid any unwanted scratches.

Next let's remove the volume knob - you'll need a flat 2.5 bit for that. Carefully insert the bit into the hole on the rear side of the knob to undo a tiny screw inside of it.

That's it - chassis is free 👍.

Hint: use a plastic tray or a magnetic mat to safely store all of those screws and nuts. You can even write where all those parts come from.

Slightly lift it up and pull towards you with just a hand to access the internals.

That's it - the amp's chassis is right in front of you.

Well done 👍