I have few broken devices and I see how easily the pads can come up. I wonder if we should manufacture new PCBs for the tape player? Is there anyone who are interested in that? Please let me know if you are and how many do you need.
I also wonder if we could do some improvement to the original schematic. For example I think it should have two layers to make it simpler, beside I do think the minimum number of layers is two these days. Maybe there are some other improvements too.

I would use it. Probably not regularly though, but I have some old cassettes that I like to check. I do not expect to have anything new on them though.

If needed, I can do a new PCB project.

Is there documentation available somewhere?
I do not have this model of tape recorder.

Here it is the schematic as a JPG file exported from the PDF. Though the players that I have have some extra components. Eg the schematic only has 3 470uF capacitors, but my players have 4 of them. There might be other differences too, but so far I have found this.

I will be off in the next days, but I can make some new photos around Thursday. I have some ugly photos that I used to label all the components in GIMP, but I doubt that would work for any kind of autotrace.
I do not think it is important to have 1:1, but of course, we should be able to put the new board into the place of the old board, eg holes should be at the same place and there are some other limitations, eg the big sliding thingy in the middle (labelled with S1,S2,S3,S4,S5,S6) and the jacks, but I guess you know that

Zozo, better send him one of your broken units. There are a lot of things that can go wrong cloning this.