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Here are a few before/after pictures of one I did a while back. You can use the search here to find the thread. There are a couple of websites you can find with Google.com that might have your board. Mine was different, but not too much trouble figuring out what needs to be done.
The SCR I used was 2n5064, but anything close should work. The neon lamp triggers the SCR. My boards have a charge switch, had to jumper it. Clipped the trigger wires, and pulled the attached battery holder and replaced with wires.
One bummer is that it's pretty stubburn about input voltage, 1.5 volt battery. Tried to measure the current draw, but wouldn't flash hooked through the meter. Starts at about 75 mA, and counts down slow.
The strobe rate is about every 8 seconds, more of a flasher. Might speed it up with a smaller value capacitor, but I have nothing in that voltage range (that I know of...).
i remember when i pulled on of those camera flash thing out and i touched the capacitor and i threw it across the room . it didn't hurt too bad but a big pinch it was
Don't use a screwdriver, jsut use a sufficiently high resistor. First time I used a screw driver damn near gave myself a heart attack, and I don't like loud noises besides.
Pretty sure I saved something from the web, but have to do some looking. What I found was a little different from my boards, but close enough. Search for Kodak Max, remember ther was a whole web site on this one. Xenon circuits are simple in function, and similar. Will take a look around the HD this weekend.
I know there are other ways to discharge caps, and the screwdriver method is frown upon for so many reasons... But I absolutely hate geting even a light tingle, so I short the leads several times just to make sure all the sparks are done, and I still handle the board with great caution.
Large capacitors can even be damaged by very high dischage currents, especially if there's inductance in the load as it will try to charge it up in reverse.
I've never been stupid enough to touch a charged capacitor but I've had a shock of 240VAC which probably feels worse than 300VDC.
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. it didn't hurt too bad but a big pinch it was
