Marshall 5010 input jacks broken & need replacing

[xopeth]

Greetings. I have my hands on this old guy, and it needs both input jacks replaced.

Nobody in NYC wants to work on a solid state amp, so I have to do it myself.
I have 3 questions:

1- since I have experience wiring up guitars and speaker cabs, is this such a difficult task?
2- why is there a resistor in one of the input jacks (the high input)
3 - does anyone have a clear wiring diagram?

It looks like all I'd do is wire up two new jacks the same way to the wires coming from the board, but I know there's a broken wire between the two jacks as there's leg filled with solder with nothing attached on one jack (the low input), and a loose bare wire coming from the other jack (high input).

Thanks for any pointers!

 

[fitz]

Greetings. I have my hands on this old guy, and it needs both input jacks replaced.

Nobody in NYC wants to work on a solid state amp, so I have to do it myself.
I have 3 questions:

1- since I have experience wiring up guitars and speaker cabs, is this such a difficult task?
2- why is there a resistor in one of the input jacks (the high input)
3 - does anyone have a clear wiring diagram?

It looks like all I'd do is wire up two new jacks the same way to the wires coming from the board, but I know there's a broken wire between the two jacks as there's leg filled with solder with nothing attached on one jack (the low input), and a loose bare wire coming from the other jack (high input).

Thanks for any pointers!

to the forum.
This shouldn't be any more difficult than wiring a guitar or a cab.
If I had one, I'd pop it open and post some pics.
Perhaps someone still may do so.
I can however provide a link to the schematic.

https://www.thetubestore.com/lib/thetubestore/schematics/Marshall/Marshall-Masterlead-30W-5010-Schematic.pdf

Good luck and best wishes on your jack repair.

 

[Jon Snell]

Wire your new jacks the same and add this blue link;

(But something doesn't look right). Let us know how it goes.

 

[xopeth]

Update. I fixed it. I simply added the black wire in this pic, and it works perfectly like it's 1982 all over again. 🤘 Thanks everyone!