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    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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