I'd agree that the 53 ohm one sounds suspiciously low: I suppose it's
possible it arced from turn to turn and fused that way. can you see
anything wrong with it on a visual inspection? The usual reason for open
circuits in wirewounds is, I was told by a manufacturer, frequently
corrosion where the coating has a pinhole.
These days, I use two bleeders in parallel, and even then, I don't trust
them!
73
Peter G3RZP
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