Filmwasters
Which Board? => Main Forum => Topic started by: moominsean on April 16, 2009, 05:04:46 PM
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while skorj is busying himself with packfilm conversion, i have my own little project going on. i have an slr680 se, but the autofocus doesn't work (and teh battery drains very quickly)...so i'm taking it apart to see what's what and if i can fix it...
after messing about for 10 minutes trying to figure out why the front wouldn't come off, i popped off the polaroid label and there was a screw behind it. duh.
not sure what my next step is, except to put a pack of film in it and see how it operates.
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There are a lot of things to break there, really close together. Rather you than me. ;)
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i blogged a bit about it, you can see a couple vids of me messing around...
http://moominsean.blogspot.com/2009/04/project-slr-680-separt-one.html
i've stopped for today, give my brain a chance to process.
i did manage to give myself a nice little shock, probably from the flash charger.
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From memory, I read somewhere that the exposure meter uses a capacitor too...
Flash capacitors are usually big round things that run on 330V. Putting a screwdriver (holding it by the acrylic handle) to the poles will give you a nice spark if there's still juice in it.
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yeah i've figured out what goes to where in terms of power supplies, which i've updated on my blog. maybe mark has some ideas about the electronics since he's certified in that kind of stuff.
i'm sure the shock came from the flash capacitor since i was messing around with it and charged it up.
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The race is on!
Flash capacitors are usually big round things that run on 330V. Putting a screwdriver (holding it by the acrylic handle) to the poles will give you a nice spark if there's still juice in it.
Flash capacitor size will vary, as will their operating voltage (up to 5kV for some xenon stuff I think). The voltage of course is not the issue, but how much current they can discharge (and how fast). The larger, generally the more dangerous (more current capability) and as said, they will make a nasty spark, vaporize metal, and cause both flash-burns and heart-stopping jolts if you are not careful.
Capacitor current capability has increased over the years, to the point where a disposable camera flash charge circuit exceeds that of an older camera/flash easily. A small finger sized cap can now deliver current in excess of an old D-cell sized monster from a few years ago. Thus, it is imperative to remove all batteries and ensure flash circuits are discharged before working!
(Though there is nothing quite like the CRACK of a dead short across a large current capable capacitor - flash or otherwise!)
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(Though there is nothing quite like the CRACK of a dead short across a large current capable capacitor - flash or otherwise!)
And let me tell you, it can scare the s*** out of you (or at least get your pulse seriously racing... )
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i avoided that by absorbing the shock with my finger.
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i avoided that by absorbing the shock with my finger.
Laughed out loud! :D :D
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i avoided that by absorbing the shock with my finger.
:D :D :D
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i avoided that by absorbing the shock with my finger.
What's that funny smell mummy?
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i avoided that by absorbing the shock with my finger.
...but I'll bet it pepped up your hairstyle a little!
;D ;D
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maybe if it wasn't a buzzcut!