Laser line module

[Rekusu]

What ho one and all,

Kinda trivial question.

I have a cross cut saw and the handy, laser projected line is not working. eBay searching show many available and some even the correct diameter, but ............!

The non-working one has DBXQ03B on the side. One that I can find are listed as either 3v or 5v with some other wavelength data that is probably not important for timber cutting.

Assuming the size is correct, what happens if I fit a 5v into when it should be 3v? Alternatively, fitting 3v when it should be 5v?

Does this just mean the projected line will either be bright or dim? Or will something go bang!?

Thanks and toodle pip

 

[oldbutnotdead]

3v on a 5v supply will be very bright for a relatively short life. Other way round will be dim or non working. Low odds there's actually any sort of regulated power supply in your saw, there's probably only a big resistor to drop the voltage across the led so beware...

 

[Rekusu]

Thanks. Don't know what the power supply voltage is, but having found units with the same DBXQ03B designation, 3v seems correct.

Of course, the problem could be a broken connection inside the handle so perhaps releasing a few screws to investigate is the way forward.