Red laser which has dot sharpe,line sharpe,cross sharpe,output power:200mw
blue laser :power50-300mw
working voltage:DC 3.0-5.5V ACC abroad
working temperature:-10°c-40°c
Surface treatment :Anode black
dimension:14.5(D)*45(L)mm&13(D)*45(L)mm
Operate current:I<340mA...
if you can't ligh it,i am sure laser diode is dead.You will need to confirm whether the crystal is OK or not?
If you can focus it,and need to replace new diode ,maybe it will get OK.But be careful PCB.
Merged multiple consecutive posts
hehe,most of people in here are sellers or buyers?
a good article,tks for writer
If for some reason you will not be posting the item by the agreed date inform the buyer of the delay and make new arrangements.
If things are going wrong do not bury your head in...