When I received this machine, it had a blown power transistor. It powered on but the power LED pulsed, and the track LEDs didn’t work. The transport worked somehow though. I replaced the 2SB891 power transistor with a good one from a parts machine.
In addition to the blown power transistor, there was a slight tick in the transport. I removed the capstan flywheel and cleaned some specks of dirt out of the gears. The capstan flywheel in these machines, as well as the Porta 02 and Porta 02 MKii, and the 414 MKii, which all share the same transport, is held in with a tiny plastic split ring, as seen below. Sometime a while back, while working on a Porta 02 with a similar dirty gear, I broke that plastic split ring. I was able to replace it with a 1.5mm e clip, but it was not easy. It was one thing to source an e clip of that size, and another to install it on the capstan. I’ve added photos of that below as well, since I didn’t manage to make a post about that repair at the time.
The machine was in good cosmetic condition and wasn’t particularly dirty or anything. It cleaned up nicely too. It sold on Reverb here.