Hi, I have a K40 or RD4040 I got from Red Dragon Laser in the UK, and ive had it since 2021.
Today, my red dot diode stopped working, and I need to get a new one. While searching, I found this forum, so I thought I’d get your opinions and help on this
This is the one that was in my machine
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If you don’t want to buy an exact replacement or can’t find one, measure the voltage on the input wires, measure the diameter of the old one and then just look around for one which will work on that voltage and has the same diameter.