a tascam legacy mixer question

[Toki987]

I did a stupid thing a while back and trashed my old tascam mixer. I have since replaced it, but it haunts me sitting on one end over against the wall, and I want it back if it can be fixed reasonably.
I was in a tight after my cassette player started making noise while dubbing down a tape. It was a last minute , late at night thing and I had to have this tape transfered to disk so I took a boom box and used the headphone out for a signal into channel 1 of the mixer. Afterwards I found that I had lost routing of the busses, no output in the subs, and none of the other channels are acting right. Anybody know what might have happened , and maybe what I`m looking at to get it fixed?

[Beck]

What model mixer is it?