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Photo Forum / Film Photography / 35 mm / July 2007

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Minolta x-700 in the hands of an old newbie. I need help!

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Tim - 16 Jul 2007 04:39 GMT
I've owned this camera for well over 20 years, and I quit taking
pictures ages ago. I suppose I got burned out on burning roll after
roll, and jsut quit.

OK, so now I've gotten a bug to dig it out and use it again.

So I look through the viewfinder and gently press on the shutter
button, and nothing lights up in the viewfinder. So I press it to take
a shot and still nothing. OK, I say to myself, Tim you should have
changed the batteries. So I get new batteries and install them. no
corrosion,a nd all looks clear. touch shutter button,still nothing.

Sheepishy I admit that I've forgotten how to used the blasted thing!
Manual gone for years, and I'm thinking... How do I turn the thing on?
I've pushed and prodded about every button on the thing,a nd
regardless of in [P]rogram, or [A]utomatic, I still get no response.

So, while embarassed, and begging for forgiveness, I make a plea for
my ignorant state, and as graciously what I'm doing wrong???

Any help is appreciated.

Now is when I wish I had my old Yashica TL Super back. Seems like you
couldn't teat that old best up.

THANKS!
William Graham - 16 Jul 2007 04:46 GMT
> I've owned this camera for well over 20 years, and I quit taking
> pictures ages ago. I suppose I got burned out on burning roll after
[quoted text clipped - 17 lines]
>
> Any help is appreciated.

Try:    http://www.angelfire.com/ca4/shikishima/manual/
Tim - 16 Jul 2007 05:10 GMT
> > I've owned this camera for well over 20 years, and I quit taking
> > pictures ages ago. I suppose I got burned out on burning roll after
[quoted text clipped - 21 lines]
>
> - Show quoted text -

Will do, thank you!
mark.thomas.7@gmail.com - 16 Jul 2007 10:13 GMT
> I've owned this camera for well over 20 years, and I quit taking
> pictures ages ago. I suppose I got burned out on burning roll after
[quoted text clipped - 22 lines]
>
> THANKS!

I seem to recall seeing that a lot of old X-700's die because of a
couple of capacitors failing.  Thankfully, mine is still working..

Ah yes.. read this page, a few para's above the User Reviews section.

http://members.aol.com/manualminolta/x700.htm
Tim - 18 Jul 2007 17:38 GMT
Er..... I put the batteries in backwards.....

Thanks for the site's, though.

mark.thoma...@gmail.com wrote:
> > I've owned this camera for well over 20 years, and I quit taking
> > pictures ages ago. I suppose I got burned out on burning roll after
[quoted text clipped - 29 lines]
>
> http://members.aol.com/manualminolta/x700.htm
William Graham - 18 Jul 2007 21:55 GMT
> Er..... I put the batteries in backwards.....
>
> Thanks for the site's, though.

An extremely simple 4 diode circuit would allow one to put the batteries in
either way, but for some reason, they never design anything that way.......
Alan Browne - 18 Jul 2007 23:39 GMT
>> Er..... I put the batteries in backwards.....
>>
>> Thanks for the site's, though.
>
> An extremely simple 4 diode circuit would allow one to put the batteries in
> either way, but for some reason, they never design anything that way.......

Power loss in the diodes and cost.

For some reason there's always a reason.

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JimKramer - 19 Jul 2007 15:27 GMT
> > Er..... I put the batteries in backwards.....
>
> > Thanks for the site's, though.
>
> An extremely simple 4 diode circuit would allow one to put the batteries in
> either way, but for some reason, they never design anything that way.......

An extremely simple way to throw 1.4 volts away rendering most single
1.5 V batteries utterly useless.  Not so hard to understand now is it?
William Graham - 19 Jul 2007 22:13 GMT
>> > Er..... I put the batteries in backwards.....
>>
[quoted text clipped - 7 lines]
> An extremely simple way to throw 1.4 volts away rendering most single
> 1.5 V batteries utterly useless.  Not so hard to understand now is it?

Yup....I would specify a battery set that was 1.5 volts too much and put in
the diode stack, myself. They should regulate down somewhat anyway, so the
meter stays accurate until the end of their life. They must have a diode in
the source somewhere in order to prevent the camera from self destructing
when someone puts the batteries in backwards anyway, so you would only be
adding another .7 volts drop or so by doing the job "right".....
JimKramer - 20 Jul 2007 00:38 GMT
> >> "Tim" <tschna...@gmail.com> wrote in message
>
[quoted text clipped - 20 lines]
>
> - Show quoted text -

So you would specify a battery set that was twice as expensive, add
some more parts and increase the cost of the device.  Guess who gets
canned by management when the design team is reviewed...

You will note that most button cells when inserted backwards simply
short the + and - of the device to either the + or - of the battery.
It's called fail safe, good concept look it up before you apply for
the design job you so desperately want.

I guess it was too hard to understand...
:-)
William Graham - 20 Jul 2007 01:06 GMT
"JimKramer" <jimG@jlkramer.net> wrote in message >

You will note that most button cells when inserted backwards simply
> short the + and - of the device to either the + or - of the battery.
> It's called fail safe, good concept look it up before you apply for
> the design job you so desperately want.
>
> I guess it was too hard to understand...
> :-)

I don't know what you mean by "short the + and - of the device to either the
+ or - of the battery......If you put the batteries in backwards, the + of
the battery will be shorted to the - of the device, and the - of the battery
will be shorted to the + of the device. The device should have at least one
diode in series with the battery circuit to prevent any reasonable amount of
current flowing should that happen......By adding three more diodes, they
could fix it so it wouldn't matter which way you installed the battery. -
And, my life was already spent in engineering, and I have designed and built
many prototype circuits for the company where I worked, although my design
experience is already over 10 years old, since I retired in 1996. I have
used the bridge rectifier circuit to protect several devices in the past,
without any significant problems.....Most of the stuff I worked with
required battery voltages too large for the .7 volts drop of a diode to be
significant......And the diode can also act as a fuse to protect the circuit
from serious overvoltages. Also, a lot depends on the price of the
device.....If you are talking about a $2000 camera body that uses 10 volts
or more, then a $1.00 diode bridge that drops 1.5 volts is relatively
insignificant......I spent a lot more than that to protect my F5 from
automobile VR voltages that may go to 15 volts or more.....I use a, "Mean
Well" SDM30-12S12 power module that takes anywhere from 9 to 18 VDC in, and
puts out a regulated 12 VDC so I can charge my F5 battery pack from my auto
cigarette lighter, or, run the camera directly from my cigarette lighter,
even if the car is running.
Matthew Winn - 20 Jul 2007 09:24 GMT
> "JimKramer" <jimG@jlkramer.net> wrote in message >
>
[quoted text clipped - 7 lines]
> the battery will be shorted to the - of the device, and the - of the battery
> will be shorted to the + of the device.

I think he's referring to the way the contacts for button cells
usually touch the side and one end of the cell. If the cell is
inserted backwards then both contacts touch the same pole of the
cell while the other pole is left without a contact.

Signature

Matthew Winn
[If replying by mail remove the "r" from "urk"]

JimKramer - 20 Jul 2007 12:35 GMT
> On Thu, 19 Jul 2007 17:06:18 -0700, "William Graham"
>
[quoted text clipped - 19 lines]
> Matthew Winn
> [If replying by mail remove the "r" from "urk"]

Yes, but I think William is just going to ramble on a bit now...
Interesting how the topic got changed from one extreme to the other ;-)
William Graham - 20 Jul 2007 18:26 GMT
>> On Thu, 19 Jul 2007 17:06:18 -0700, "William Graham"
>>
[quoted text clipped - 25 lines]
> Yes, but I think William is just going to ramble on a bit now...
> Interesting how the topic got changed from one extreme to the other ;-)

Well, if you don't like my, "rambling" you can always choose to ignore it.
And, as far as I can tell, we are still on topic.....We are talking about
the effects of, and the prevention of, reversing batteries in electronic
devices, aren't we?
William Graham - 20 Jul 2007 18:24 GMT
>> "JimKramer" <jimG@jlkramer.net> wrote in message >
>>
[quoted text clipped - 15 lines]
> inserted backwards then both contacts touch the same pole of the
> cell while the other pole is left without a contact.

Ah! - I understand now.....Very cleaver.....Designing the cells so they
can't really be inserted backwards.....They do the same thing with the 9
volt cells.....Configure the clips on top so they can't be installed
backwards. I tend to not purchase anything that doesn't use "AA" type cells.
(If I can avoid it) But some of the new devices are so small that using a AA
cell would be preposterous.....(I just bought a cell phone that does
everythng in a package that is almost as small as a package of chewing gum)
mark.thomas.7@gmail.com - 19 Jul 2007 13:07 GMT
> Er..... I put the batteries in backwards.....
>
> Thanks for the site's, though.

Yep, that little bendy holder thingy is not all that clear about which
way is up, so you're probably forgiven..

(O;
 
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