Laser repair Help !!

Hi All.
Firstly my english isn't good and sorry about it ı hope you guys can will fixed my problem.
--------------------------------------------
When I use the first, it was perfect. I used it for 1 month. I've never used it for 1 month after.Buy a new battery and now I tried to use but only looked at it in this light. My laser normally green color. If you look at the detail you an see in the photo/video of the red light. In your opinion what is the problem.
Batteries are Works well they are full .
I live in Turkey and very rare for repair places.
I'm saying again ıt was a greenl lazer. Not RED

here is the video link https://www.youtube.com/watch?v=FJQlq1H9yGY

DO NOT look into the aperture - Green laser light is typically produced by using a high power IR laser diode - the IR light is then converted into green - what you are seeing is light being emitted from the IR laser diode.

Impossible to say what's wrong with your laser, could be several things, but there's a chance that it's emitting lots of IR which could be harmful to your eyes. Even if that isn't the case - it's entirely possible that the laser could unexpectedly start working and then blind you. Never look into the aperture of a laser that still has the potential to turn on at any time.

If it was a cheap laser it's probably not worth fixing - I'd recommend buying a new one. May or may not be worth it if it was a high quality green - depends what the issue is - doubt it seeing as it died after a month.

I'm bought it from Amazon yes ıt was a cheap laser.
Where can ı buy new one ?
ı have 20-50 $

If you want in that range, I might throw O-Like into consideration: Greens with some of their $40-50 range options. At that price, 520nm diode green is out (though at twice that price, you could get it and be better than 532nm). I would recommend a pre-built laser ordered from somewhere other than e-bay. Also, I second the DO NOT look into the apeture, and get some safety goggles before messing around with another one.

My laser model is SD Lazer 303 is it bad ?
I saw a lot video about this model

Those 303 lasers are cheap and can be found most anywhere. If you are looking to replace it with another, you might have a look at eBay, because they have the same lasers as other places that charge more for it. You should be able to find it for $10.00 or so, depending on who is selling them. But, keep in mind, this is a crap shoot as you might get a great one way over spec. or one that is not.