I feel for you brother.
The emitter, fiber cable, and source are all one unit and expensive to replace, I don’t know any trouble shooting tips for the laser assembly. Couple last tests, I would rotate the emitter 90 degrees and test, that might tell you if its the galvo head, and completely remove the guts from the combiner or better yet the whole combiner and test.
That would be a easy inexpensive fix if its the combiner. Keep us posted.
Tried rotating the emitter 90 degrees, no change. That’s… good I guess? haha - means it’s probably fine right?
I think the red dot is indeed slightly weaker in the top corners, so could be something with the combiner or in the head for sure… It doesn’t really come across on video but it seems slightly dimmer
I made a slightly longer video showing the red dot as well as the marking itself (in EzCAD for now because I had to swap drivers to use the CorFile program)
The combiner - that’s in the head I’m assuming? Guess I’ll start taking that apart… anything I need to be careful of in there besides general alignment stuff?
Combiner is in the path, its what the red dot plugs into.
Its a one way 45deg mirror, laser goes through, red dot 90’s off it
May be able to pull the red dot laser and mirror right out the top.
My bet is a burned out mirror
Now, if you are really lucky some laser sources have a red laser internal, but builders put the combinrr on anyway. So, if you pull the red laser and mirror and still get a red dot, just put a piece of tape over the hole. If it was a JPG i could tell by the model number but not familiar with Raycus.
I took a look at the combiner and the mirrors seem to be in good shape… so probably something in the head?
Did you try a cut with the combiner removed?
Yup, unfortunately I have the same result. I also tried offsetting the field in the -Y direction (back on lightburn drivers to do more testing) and it doesn’t move the weak area. So it must be something in the head it seems
Hmm… now that Lightburn added SEACAD/BSL board support, maybe I’ll swap my BJJCZ board back to the factory one and see if the issue persists?
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I’m out of ideas.
Rotated the emitter, no change
Rotated the lens, no change
Removed the combiner no change
Cleaned mirrors and lenses, no change
Changed focus, no change.
I don’t think there is any glass in the head other then mirrors. Maybe bad mirror? About all left.
Maybe take the head off and look in from the back side, spiderwebs? Laser resistant spiderwebs…
Remind me, when you Rotated the emitter the weak spot didn’t move, correct?
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Correct, weak spot did not move. I’ll check the rest of the head over again, maybe disassemble further. It’s RC7110-ASYA head, which you can purchase, however the “cheap” one from OMTech is out of stock. I emailed them for support and I’m chatting with them, so I’ll report back if I discover anything new… Going to try that board swap first though I think
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I think it maybe was laser resistant spiderwebs?!
There was a tiny bit of cobweb or something in the head, before the mirrors. I guess the light was just too low before and I didn’t see it. You sure you’re not some kinda psychic? I cleaned the mirrors again and swabbed the inside of the tube and It’s working great now!!
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That would be unusual to say the least.
Rotating the emitter should disqualify the board as the culprit.
If you’ve rotated the emitter but seen no change it could perhaps be getting clipped at the source side > fiber connection?
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Thanks for all the help everyone, this is solved. 
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Laser resistant spiders spinning laser resistant webs. Don’t get bit, you’ll turn into spider-laser-man!
Bright side you now know more about the inner workings then most!
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