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

Discussion in 'Minolta' started by Tim, Jul 16, 2007.

  1. Tim

    Tim Guest

    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!
     
    Tim, Jul 16, 2007
    #1
    1. Advertisements

  2. Try: http://www.angelfire.com/ca4/shikishima/manual/
     
    William Graham, Jul 16, 2007
    #2
    1. Advertisements

  3. Tim

    Tim Guest

    Will do, thank you!
     
    Tim, Jul 16, 2007
    #3
  4. 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
     
    mark.thomas.7, Jul 16, 2007
    #4
  5. Tim

    Tim Guest

    Er..... I put the batteries in backwards.....

    Thanks for the site's, though.



     
    Tim, Jul 18, 2007
    #5
  6. 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.......
     
    William Graham, Jul 18, 2007
    #6
  7. Tim

    Alan Browne Guest

    Power loss in the diodes and cost.

    For some reason there's always a reason.
     
    Alan Browne, Jul 18, 2007
    #7
  8. Yep, that little bendy holder thingy is not all that clear about which
    way is up, so you're probably forgiven..

    (O;
     
    mark.thomas.7, Jul 19, 2007
    #8
  9. Tim

    JimKramer Guest

    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?
     
    JimKramer, Jul 19, 2007
    #9
  10. 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".....
     
    William Graham, Jul 19, 2007
    #10
  11. Tim

    JimKramer Guest

    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...
    :)
     
    JimKramer, Jul 20, 2007
    #11
  12. You will note that most button cells when inserted backwards simply
    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.
     
    William Graham, Jul 20, 2007
    #12
  13. Tim

    Matthew Winn Guest

    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.
     
    Matthew Winn, Jul 20, 2007
    #13
  14. Tim

    JimKramer Guest

    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 ;-)
     
    JimKramer, Jul 20, 2007
    #14
  15. 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)
     
    William Graham, Jul 20, 2007
    #15
  16. 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, Jul 20, 2007
    #16
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.