A few weeks ago, I brought home
a TASCAM Portastudio 144. It worked ok but, not long after bringing it home, it quit altogether. My buddy had gotten it (second hand of course) sometime in the early 2000s and had contacted TEAC for an owners manual and service manual. I put that service manual to use and narrowed the issue down to a rectifier in the power supply section. My order from Mouser just came today and hell yeah, that 55 cent bit makes it work again. :)
Next step for this is to find some working faders as the track 2 fader isn't good. It's got one spot where it'll output any sound at all. Luckily, there is a dude in the UK that has working parts for these ol' Portastudios. Gonna have to place an order soon...