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THANK YOU!!!!!:thanks: i connect 2 AA bateries with resistor, which gave me 250 mA and it went pure red :) well it didnt work with 1 batery, dont know why, but with 2 it was cool. well the lazer isnt a dot, its some kind square shape. Im uploading a photo. Red arrow is pointed to some kind of...

with inverted probes left pin around 165 Ohm, and i can't really tell what is right, because at the momoent i have really simple MM which can only test 2 MOhm max, but i think its bigger.

In the 1st photo left pin and middle = 53kOhm, right pin and middle 73kOhm.

Can you explain his 1st message? About polarity

Sry, but my english is not really good, can u explain more detailed?

thanks. Well will it survive 1 V battery test if i miss polarity?

I got it from dell laptop dvd rom,well im a bit afraid to remove the heatsink because i dont want to damage the laser. Evrything rly tight, and i dont really know how to remove it

sry, didnt see the upload failure

Does some1 know this laser polarity? Its not a tube shape i googled it but couldnt find