Recently I bought a new NDG7475 laser diode off of eBay along with a 1.8A SXD Super X-Drive Laser Driver M140 driver.
Once hooked up, the diode doesn't turn on, some times it does but the output is dim and goes out pretty fast. I returned the driver and bought a new one, which did a similar thing.
The driver is made for 7-12V input, here's my setup:
![20210106_190418.jpg 20210106_190418.jpg](https://laserpointerforums.com/data/attachments/54/54606-d4f781f3188380d4704ec97b3524b644.jpg?hash=1PeB8xiDgN)
![20210106_190356-min.jpg 20210106_190356-min.jpg](https://laserpointerforums.com/data/attachments/54/54607-9a45e544d36f75c8ef64a71c9a1913a9.jpg?hash=mkXlRNNvdc)
![20210106_190408.jpg 20210106_190408.jpg](https://laserpointerforums.com/data/attachments/54/54605-21a33448eac8a436629a59418d555ec7.jpg?hash=IaM0SOrIpD)
The driver even produced a tiny bit of smoke.
I'm 100% sure all polarity is correct, there was no static either, I was grounded all the time. What could this be? Am I doing something wrong?
Once hooked up, the diode doesn't turn on, some times it does but the output is dim and goes out pretty fast. I returned the driver and bought a new one, which did a similar thing.
The driver is made for 7-12V input, here's my setup:
![20210106_190418.jpg 20210106_190418.jpg](https://laserpointerforums.com/data/attachments/54/54606-d4f781f3188380d4704ec97b3524b644.jpg?hash=1PeB8xiDgN)
![20210106_190356-min.jpg 20210106_190356-min.jpg](https://laserpointerforums.com/data/attachments/54/54607-9a45e544d36f75c8ef64a71c9a1913a9.jpg?hash=mkXlRNNvdc)
![20210106_190408.jpg 20210106_190408.jpg](https://laserpointerforums.com/data/attachments/54/54605-21a33448eac8a436629a59418d555ec7.jpg?hash=IaM0SOrIpD)
The driver even produced a tiny bit of smoke.
I'm 100% sure all polarity is correct, there was no static either, I was grounded all the time. What could this be? Am I doing something wrong?