What Died In This Poor Nakamichi 481?

We have ourselves a little mystery today. I was surfing through the Yahoo Japan listings one day looking for excuses to spend money, and this here Nak 481 popped up for about $135 CAD. Being a three head model, I was immediately interested in it as a potential playback head donor for future repairs, so I bought it. Here's the thing, though... the deck was shipped in pieces because the previous owner let the magic smoke out and immediately gave up on it. I'd like to know what happened to it, so I intend to find out. Service inquiries (Canadian clients only): see email link in profile. 00:00 - Intro 05:55 - Inspecting the deck 13:09 - Control panel reassembly 15:00 - Looking for burned components 18:50 - Powering up 28:48 - Diagnosing bad parts 41:20 - Microscope inspection of Nakamichi playback heads 49:15 - Using mostly dead 481 to fix mostly dead 482