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What do you mean by "led'd a diode"? It is still emitting collimated light - the shape has changed and the power dropped quite a bit.

Tap the diode itself?

Looks like the image labeled "tem 20" or "tem 2". Is this likely to be a permanent thing or do these diodes switch back and forth?

I am trying to post a picture of the laser dot here - hope this works.

Ok - it is 405nm. Hang on - I'll upload a photo. I am sure sanwu will figure it out but I am curious - I am not super knowledgeable but I read somewhere about diodes sometimes "switching modes" or something like that.

Who is podo? Sorry - I am new here.

I have a sanwu 800 mw challenger - have had it for a few weeks. Looked great at first but the beam recently weakened (at all mode settings) and there are two strange artifacts. First, the "dot" is no longer a dot. It is like a dot surrounded by two crescents - there are three separate "lobes"...