Hello all,
A few weeks back I purchased this green laser from Banggood.com.
The page itself on Banggood is gone so I linked a google cache.
I received it today, and after charging it until the light on the supplied ultrafire battery charger went green I put the battery inside and turned it on... nothing.
The charging was done very quickly so I checked, and realised it wasn't actually properly charged... dodgy charger.
After two hours of charging it some more... still nothing!
It didn't come with a manual, and since the pictures on the website were actually of two different lasers, I had to guess the polarity.
It actually gets really, really hot and starts smelling like hot glue after a while when I insert the battery one way, and less hot the other way, but neither way around gives me any light.
So I decided to take a peek inside, and surely, there was a shiny spot on one of the chips, a TI LM358.
The rest of the driver? Well let's say that dodgy and handsoldered as it looks... there are no obvious burnt spots or loose connections.
For as little as I know of laser drivers, this looks like a general one, nothing special.
Interestingly where they're silkscreened SW1 there's a piece of bare metal that looks an awful lot like a component lead (Seems they decided it would be nicer to have a switch on the back like on those Cree flashlights), with underneath it a name: Alylaser-001. (I haven't been able to find the exact driver I own, but what I have found is their website)
Does anybody have any pointers on what's broken here? Should I fiddle with the trimpot? Or replace the LM?
Any help would be greatly appreciated!
A few weeks back I purchased this green laser from Banggood.com.
The page itself on Banggood is gone so I linked a google cache.
I received it today, and after charging it until the light on the supplied ultrafire battery charger went green I put the battery inside and turned it on... nothing.
The charging was done very quickly so I checked, and realised it wasn't actually properly charged... dodgy charger.
After two hours of charging it some more... still nothing!
It didn't come with a manual, and since the pictures on the website were actually of two different lasers, I had to guess the polarity.
It actually gets really, really hot and starts smelling like hot glue after a while when I insert the battery one way, and less hot the other way, but neither way around gives me any light.
So I decided to take a peek inside, and surely, there was a shiny spot on one of the chips, a TI LM358.
The rest of the driver? Well let's say that dodgy and handsoldered as it looks... there are no obvious burnt spots or loose connections.
For as little as I know of laser drivers, this looks like a general one, nothing special.
Interestingly where they're silkscreened SW1 there's a piece of bare metal that looks an awful lot like a component lead (Seems they decided it would be nicer to have a switch on the back like on those Cree flashlights), with underneath it a name: Alylaser-001. (I haven't been able to find the exact driver I own, but what I have found is their website)
Does anybody have any pointers on what's broken here? Should I fiddle with the trimpot? Or replace the LM?
Any help would be greatly appreciated!
