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Apparently I was doing something wrong the first time I read the resistance of the ballast resistor. This time it ohm out at 75k. I'm really suspecting the power supply as some solder points look brownish and he definitely plugged a 19.2v power adapter into the power supply. I just wish there...

I'm sure I would have to buy a few other parts if its possible. I'm not too entirely far from a radioshack/electronics supply store so I could make a trip there if need be.

Could I build a power supply using an ignition coil? I'd like to build one since I'm having trouble finding one online that matches the voltage of the one on the bottom of the circuit board.

I tested cont from the terminal at the front of the tube to T1 and found no resistance on the first pin with some resistance on the other two pins on the side of T1 closest to the tube. OL from the terminal at the front of the tube to the 3 pins on the side of T1 opposite of the tube. And across...

Ok so in terms of circuitry and a/c electricity im somewhat of a dumbass. I have a pretty good understanding of d/c electronics but some things im not familiar with. How would I go about discharging the capacitors? Also the guy I bought it from sold it to me for 2 dollars, however at his yard...

Is there a way I can test either the tube itself, or the output of the ballast/transformer component with a multimeter? My apologies for the lack of technical terms.

I have a decent understanding of dc electricity as I'm an automotive technician. Never played with ac much but I'm sure I could figure out how to get along enough to build a power supply.

How would I go about finding the right power supply? The tube has no numbers or letters on it that I can see. The previous owner told me it was blue but I am unsure really of the color. The transformer/ballast component on the bottom has some specifications. I attached another photo. Thank you...

I apologize if I'm in the wrong area for this question. I'm very new to lasers and want sure. I recently purchased a helium neon laser at a yard sale for a couple dollars. I dont have the power supply for it but have tried one that is matching at 12 volts unsure of amperage. Nothing has made the...