Some time ago I posted asking for help with my VT100 monitor board and flyback. This is the monitor board that uses Germanium transistors and for which there is no known printset available. The conclusion was that the flyback had failed, proved by the burning smell and poor ring test results, and described at greater length here; https://robs-old-computers.com/2026/03/30/vt100-video-display-failed-flybac…. I have managed to get a NOS replacement flyback. The ring test shows that it is good. However, I have enough suspicions about the two Germanium transistors (Q414 and CR406) that I don't want to just slap it in and hope it works, especially as I have little chance of ever finding another flyback. The primary coil of the flyback, driven by these two transistors, is the one that is shorted in the bad flyback and I don't know if the flyback failed because of these transistors or not. Are there any tests I could do on the monitor board prior to fitting the new flyback? Could I source any kind of modern inductor to act as a sacrificial part that would be enough to prove correct operation? I have updated my own reverse engineered schematic here: https://robs-old-computers.com/wp-content/uploads/2026/09/5414131-partial-s…. This is from a KiCad 10 schematic and I can of course supply that if it would help. Thanks Rob