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Looking for help sourcing part number or info on this Diode it is shorted with continuity both directions. Only markings I see is
S6
49
New to site so I hope this is allowed
That looks like a transient suppressor diode. Their failure mode when they have suppressed a number of transients that were too large is to fail short-circuit.
You need to disconnect one end (or both) to know if the short circuit is that component.
Use google image search, first do search for vendor symbol (extract just that portion with
image editor) then go for their site/support forums to get complete info.
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