I've always wondered why the manufacturers/importers didn't install TVS diodes on every modern engine to protect the boards. Seems like a lower cost option than fulfilling warranties.
Also, the general consensus seems to be that with a modern transformer, no further TVS protection is needed at the track or within the engines themselves. But with an older transformer, you must sprinkle TVS diodes throughout your layout - at the binding posts, at the lock-on, various places on the track, etc. Would it be sufficient to only install TVS diodes at the binding post of an older transformer (with in-line fuse protection), similar to the modern transformer?
