galvos

[jv277742]

good evening :-)


my 10W RGB laser gives a distorted image, in the following video you can see how it draws the ilda test pattern, I do this with beyond.

https://photos.app.goo.gl/bmur7tJ9zsqDFQAK9

https://photos.app.goo.gl/bmur7tJ9zsqDFQAK9


does anyone have an idea what the problem could be?
galvos choked?
or something else?


thanks in advance,


Johan

[laserist]

An open ground to one amp?

[jv277742]

An open ground to one amp?

how do i find out? can i open it and look for it-?

[laserist]

Have you ever fixed or built anything involving electronics?

[jv277742]

I have light moderated skills regarding electronic repairs, and i'm having most tools needed, like multimeter etc. only a scope i don't have.

last night i took a picture from te inside of my laser.

https://photos.app.goo.gl/t3Ni4q3mCPERCtqr9

https://photos.app.goo.gl/8LUVEo1snAhtnXwM7

kind regards,

Johan

[jv277742]

i'm having light moderated skills about repairing electronics, and i have a multimeter etc, only a scope i'm missing

last night i took a picture of the iinside from my laser.



https://photos.app.goo.gl/6PTuchGtFi4iUyHe9

https://photos.app.goo.gl/8LUVEo1snAhtnXwM7


Kind regards,

Johan

[laserist]

In your first videos it looked like you had a sine wave superimposed on the y axis. An open ground could do that. If you were projecting a square the y axis looked like the gain was low also. What's going on depends on the details.

I'd swap the x/y inputs at the scan amps to see if the problem moves to the x axis. (Do not swap the outputs to the scanners.) If the problem moves to the x axis the cause is in the y axis path before the amp input, if not - it's after the y axis scan amp input.

Step 2 depends upon the result of above.

[jv277742]

you mean switch the connector wich are on the galvo''s? or do you mean switch the connectors on the driver board?

[laserist]

you mean switch the connector wich are on the galvo''s? or do you mean switch the connectors on the driver board?

The drivers have and input, output, and a power connection. The galvos connect to the output AND ARE MATCHED TO THE SCANAMP - that's why I specifically wrote: (Do not swap the outputs to the scanners.). The input connects to the ILDA connector - perhaps via a dmx board or something. The power should be obvious.

In my opinion, you are not ready to do your own troubleshooting.

[jv277742]

i have done anything yet.

is an open ground repairable?
I am already glad that the galvanos are not choked.
this is about: RD8309 40K 0056

https://photos.app.goo.gl/Speje9Pd7k6F5qya8
https://photos.app.goo.gl/iXTmt1zXhQiWmHW6A

https://photos.app.goo.gl/q6Mqz5RoDsVTmUTb7
https://photos.app.goo.gl/2NinT8e3C1vHTTidA
https://photos.app.goo.gl/tRJLEgxZ3PiXxCAK6