Quote from: Tassieviking on September 17, 2023, 01:29:02 PMIt might be you have a different style of PCB, possibly an earlier or later version of the same amplifier.
Marshall would release the same model but with several different layouts but basically the same circuit, they did however completely renumber all the components with several new revisions.
If you have the same circuit you should have 2 47nF capacitors in there, C14 and C15.
Can you find 2 47nF capacitors in there ?
Can you find a 25uF capacitor on the PCB ?, there should only be one.
If you can take some pictures of the top and bottom of the PCB I will see if I can trace your version out for you properly, the more pictures the better.
If I can see the top and the bottom and then compare where the traces go to what component it's fairly easy to do.
There are 2 47nf caps remaining. I traced it using the schematics and when I removed the cap it had C18 screen printed under it. I have it buttoned up, next time I remove the chassis I will take a picture. Also noticed someone had replaced Q6 (2N3819) at some point with a different transistor.