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  1. L

    LT-20W-A laser module not emitting light

    Thank you very much for your reply, I bought the laser module yesterday for 150 $, The unit uses LASERTREE Diode Laser bleue, 450nm, 4W TO-5, 9mm that is quite expensive between 50-60 $ . Unfortunately The solution is to buy a new one. Could you please advice for a good quality laser...
  2. L

    LT-20W-A laser module not emitting light

    Thank you very much for your help, unfortunetly the diode is blown , i tried to test it several times with the good polarity but it does not emitting any signal . I already remove it from the module. could you please tell me if it possible replace it or i have to buy new module. ?
  3. L

    LT-20W-A laser module not emitting light

    Thank you very much for your fast reply Do You meen that i need to connect the LD+ AND LD - to a 3,7V battery
  4. L

    LT-20W-A laser module not emitting light

    Good day , I am new in this forum and i need your help. I bought yesterday a laser module from laser tree model : LT-20w with 4W optical output ,it was working fine when I connected the adapter to 12V. by mistake I used 29 V 0.75 A adapter instead of 12 V and now the laser not working and...


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