This Porta 02 MKii repair was really fun and something different than I’m used to. The seller said that tracks 2 and 3 didn’t work. I found in my testing that track 2 was very faint and track 3 was non-existent.
When I opened up the unit and started checking it out, what I found was that the wires for tracks 2 and 3 on the playback side of the play/record head had broken off their solder pads. I was able to strip them back a bit more and resolder them to their respective pads. It wasn’t my best work, but it works. The solder pads are just a surface pad, and the wires are incredibly thin. There wasn’t much room to work in there, either.
This machine was very clean and in good cosmetic condition when I got it, and even better after I cleaned it up. I did the usual things like clean all the jacks, change the belts, clean and demagnetize the heads, and so on. It sold on Reverb here.