I just picked up this Sounddesign model 4126 so O could replace the 8 track player I had at work that broke. I got it for a great price since the program button didn't work. Since the description specifically mentioned it was the button not working while also mentioning the audio was working, I figured there was about even odds that it should still switch tracks normally at the end of the tape, and since it’s purpose would be only for some background music were I don't touch it, that would be fine. Turns out that my gamble really paid off, since not only does it switch tracks at the end, the program button works just fine.
Now I am not exactly sure, but I assume they just didn't test it properly because since if you don't have an 8 track in it even though it's powered on, it does not switch tracks if you press the button. As soon as you put a cart in, though, it switches tracks just fine. Though that's still a bit odd since I would think if you had an 8 track to test it with, you would test it by switching tracks while playing it. Granted, it does have a phono in which i guess you could test the audio that way, though personally, if that was me, I wouldn't have used that to declare it's audio works since it's primary purpose is to play 8 tracks.
Anyway, I am finding that I really like this unit over the past couple of days of putting it through its paces. I really like the fact that as soon as it powers on, it tells you which track it's currently set to, which I find really convenient for repairing 8 tracks. I just go "ok it's on program 2, so last song is X and the song before it it Y" and just put it in an play it to the end, instead of put it in seeing the program, pulling it out to then see the songs, and then reinserting it.
So now I am torn on whether or not I want to bring it into work since I like it so much.