Reddit has suggested this is an L6 inductor. I have very little backgrounds in electronics, but if anyone has any protips on sourcing this, this might go from a funny story / 45 dollar paperweight to a working P420 - Markings read R68 1315
Google search has turned up... very little
Yeah, that's a toughie - there won't happen to be a little inductor inside the shipping material that sheared off, would there? The only thing I can really tell you is that the R68 figure is significant since it tells you the inductance (R) value of the component (68µH), and i am guessing that the 1315 "might" be the max milliamps accepted by the inductor (1.315 Amps?), although some manufacturers use the value to denote the size of a given component. The closest match I can find on Mouser
is this, but run it by an Electrical engineer first (I am not an EE), and see if someone here with a working HP P420 can measure out the physical dimensions on that inductor and look for more markings that can help. This can either be a quick buy-solder-and-fix, or it could be an item to be returned on eBay.