I need to change a Fujifilm flash bulb

External Since: Nov 04, 2007 Posts: 308

Joseph Meehan <sligoNoSPAMjoe DeleteThis @hotmail.com> wrote:
> "peter" <nospam DeleteThis @nospam.com> wrote in message
> news:WjyAj.3091$Mp4.485@trndny02...
>> "Joseph Meehan" <sligoNoSPAMjoe DeleteThis @hotmail.com> wrote in message
>> news:47d2a696$0$24082$4c368faf@roadrunner.com...
>>> "soxmax" <soxmax_2000 DeleteThis @yahoo.com> wrote in message
>>> news:40dc512a-af96-4c32-8ec5-5f419584605f@v3g2000hsc.googlegroups.com...
>>>> On Mar 7, 10:45 am, "Joseph Meehan" <sligoNoSPAM... DeleteThis @hotmail.com>
>>> .. . I am pretty handy with the
>>>> full spectrum of voltages: I was a radar tech in the military and now
>>>> I'm an electrical engineer.
>>>
>>> You should expect a capacitor with a couple thousand volts in there.
>>
>> A couple thousand volts?!
>> I believe it is only a few hundred volts. Here's a random spec sheet I
>> found on the web:
>>
>> http://www.yongminglight.com/?product=XENON_FLASH_TUBE&c=33

> I guess things have changed since the last time I had one apart. I
> guess that was about 40 years ago. However that one was 700V, close to a
> thousand. :- ) That does make sense considering the physical size of
> most of today's tubes. Trigger voltages have also changed a lot.

My 35 year old Vivitar 283 develops about 240V across the tube. I'd be
surprised if flashes small enough to fit on a camera hot shoe ever
went much higher, given the size and cost of the extra insulation
precautions needed.

--
Chris Malcolm cam DeleteThis @infirmatics.ed.ac.uk DoD #205
IPAB, Informatics, JCMB, King's Buildings, Edinburgh, EH9 3JZ, UK
[http://www.dai.ed.ac.uk/homes/cam/]

External Since: Mar 07, 2008 Posts: 8

On Mar 8, 10:37 am, Aj Darkin <nocont... RemoveThis @noaddress.com> wrote:
> On Fri, 7 Mar 2008 16:14:06 -0800 (PST), soxmax <soxmax_2... RemoveThis @yahoo.com> wrote:
> >On Mar 7, 2:59 pm, "HEMI-Powered" <n... RemoveThis @none.en> wrote:
> >> soxmax added these comments in the current discussion du jour
> >> ...
>
> >> >> > Theflashbulbin my Fujifilm Finepix F30 no longer works.
> >> >> > I would like to change this out myself if possible. Will
> >> >> > someone please direct me to a website or other resource
> >> >> > where I can find directions and parts?
>
> >> >>flashbulb?!
>
> >> > Is "flashbulb" incorrect nomencalature? I am referring to the
> >> > light at the top of the camera casing that flashes when you
> >> > press the shutter button. I am reluctant to call it a "flash
> >> > light" for obvious reasons. Is there a common name for this
> >> > light in the digital world?
>
> >> Well, at one time these thingies were called "electronic flashes"
> >> vs. "real" glass bulbs that exploded with a very bright but very
> >> short duration burst of light. Thus, they came to be known as
> >> "flashbulbs" and came in literally dozens of sizes and shapes.
> >> Perhaps simply saying that your camera'sflashquit and let it go
> >> at that or perhaps call it what some camera makers call a "speed
> >> light".
>
> >> --
> >> HP, aka Jerry
>
> >> "Surely you jest - and don't call me Shirley!" - from the movie
> >> "Airplane!"
>
> >Fair enough. I won't call it theflashbecause that can be confused
> >with theflashmemory in the camera. Theflashmemory in the camera is
> >what contains the camera's firmware and software. In my industry when
> >we say "the system'sflash" it is referring to theflashmemory.
> >"Speed light" just sounds silly. I think I like "electronicflash" but
> >that could still be confused withflashmemory. Do you think "flash
> >tube" is okay?
>
> "Flashtube" is the usual nomenclature for that part. (Or xenonflash-tube.) But
> after reading how it got that way don't be so sure the xenon tube is the
> problem. Unless you can actually see it is cracked or if it appears burnt-out
> (black and white residue inside, looking like a blown fuse). Could be you just
> have moisture inside the camera that either fried some component when you tested
> it, or is just preventing it from working. High voltage sections (as you know)
> are very touchy when it comes to moisture. If it is damp in that circuitry it
> just may not be building up enough charge to fire off theflash. Xenon tubes
> require a particularly strong break-down voltage before they can emit light.
>
> if you don't suspect any physical damage to the tube itself then see if it works
> in a few days (to a week) when set in a warm dry place.- Hide quoted text -
>
> - Show quoted text -

It is still broken. There was no moisture inside the scuba case after
we rescued the camera and we had a dessicant pack inside. There is a
big dent in the camera casing above the flash tube (where the scuba
case mashed into it) so I suspect that tube is either disconnected or
the wiring is broken. I just need a parts breakdown so that I can see
how the camera is assembled before I take it apart. Everything on the
camera works except the flash tube so I am reluctant to perform
"experimental surgery" to discover how the camera is assembled. Is
there a parts breakdon or assembly instructions on the web? I can't
find any. Thanks.