Olympus C750 resetting

Discussion in 'Olympus' started by Graham Watkins, Jun 7, 2006.

  1. I have an Olympus C750 and everytime I change the batteries, all the
    settings reset to the defaults including time and date.

    I'm sure it didn't do this when I first got it and the manual says the
    settings should stay for an hour when changing batteries.

    I use rechargeable NiMH batteries.

    I know at least one other person with the same camera and the same problem.

    Is this a fault with the camera and can it be fixed? Any suggestions

    Graham Watkins, Jun 7, 2006
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  2. Graham Watkins

    Ken Weitzel Guest

    Hi Graham...

    It's normal. Problem is that holding the settings for an hour
    is terribly terribly over-optomistic.

    Solution is simple - when you re-charge your batteries simply
    put your spare set in. (a few minutes switching time is OK)

    If you haven't yet got a second set, any old AA's will do. Virtually
    no current is needed to keep your settings, so even an almost
    dead set of any type AA's will be OK.

    When I started out and had only one set, I used to keep a
    worn out set of alkalines from my grand daughters portable
    CD player near the charger. They wouldn't any longer properly
    spin the motor in her player, but were more than adequate to
    save the camera's settings. Just don't turn the camera on,
    and don't leave them in the camera longer than charging time,
    lest they leak.

    Take care.

    Ken Weitzel, Jun 7, 2006
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  3. Ken,

    I have spare batteries and even when I change them straight away - less than
    a minute - the settings still reset.

    Graham Watkins, Jun 7, 2006
  4. Graham Watkins

    Paul Heslop Guest

    I have the Olympus c725 and it is terrible for resetting, even a
    little knock can do it when the cam is switched on, but one thing I
    did notice was that if the cam is in a usable mode when changing
    batteries it will reset. I have to make sure it is switched off
    completely, lens retracted etc, then do the battery switch.
    Paul Heslop, Jun 7, 2006
  5. Graham Watkins

    ASAAR Guest

    I have some devices that also too easily lose their internal
    settings if more than a few seconds are taken to change the
    batteries. A small capacitor is often used to maintain some voltage
    when the batteries are removed, and if they deteriorate with age,
    the protection time will be less than when the device was new.
    Also, the higher the battery voltage at the time they are removed,
    that greater the amount of time you'll have to replace the
    batteries. This reduces the problem when alkaline batteries are
    used, since unlike rechargeable batteries, when the device powers
    off, the battery voltage will rebound within seconds to a higher,
    safer value, giving you more time to change the batteries.

    When I've had to use rechargeable batteries (and I suspect that
    you *really* wouldn't want to use alkalines in your C750) I try to
    minimize the time that the batteries won't be powering the device.
    If your camera uses 4 AA cells, try to quickly replace only one cell
    and then wait a few seconds before trying to replace the next one.
    That one fresh cell will raise the total voltage in the camera
    slightly, giving you a little more time to replace the next cell.
    Repeat the process until all cells have been replaced.

    If the camera has a socket that allows it to be operated using a
    transformer or an external battery pack, having another power source
    plugged in would probably give you an unlimited amount of time to
    replace the batteries. Several old Palm PDAs (that used AAA
    batteries) also had the same problem when changing batteries. They
    could be fixed by opening the case and replacing the worn or
    defective capacitor with a new one, preferably one having a greater
    capacitance than the original. This is much harder to do with
    cameras, as opening them is far more likely to cause some kind of
    damage than opening a PDA. But if you can find someone that repairs
    cameras, and who you can trust, having them replace the capacitor
    might be a relatively inexpensive fix.
    ASAAR, Jun 7, 2006
  6. Thanks for the comments.

    I got a reply from Olympus and they claim the camera has an internal battery
    that may need replacing - by a technician of course. I contacted the
    nominated repairer and he wasn't aware of an internal battery but quoted a
    price of $AU145 if he could get a battery - not exactly an inexpensive fix.

    It seems the camera does have a DC input socket so maybe I should try a
    battery pack for that while I change batteries.

    Graham Watkins, Jun 8, 2006
  7. Graham Watkins

    Paul Heslop Guest

    worth a try Graham, you could almost buy a new cam for the cash they
    want to change the battery!
    Paul Heslop, Jun 8, 2006
  8. Graham Watkins

    Ken Weitzel Guest


    For what little it may be worth, I've had several of the c-7xx
    cameras apart for service - though NOT a 725 - and I've never seen
    any sort of battery, nor had reason to suspect there is one.

    IF there is, then the only way is if it's embedded in a chip.

    Take care.

    Ken Weitzel, Jun 8, 2006
  9. Graham Watkins

    Paul Heslop Guest

    The rep for the 725 doing this reset is very bad. Of course I only
    found this out AFTER I bought it.
    Paul Heslop, Jun 8, 2006
  10. Graham Watkins

    Malcolm Guest

    I got a reply from Olympus and they claim the camera has an internal
    The way I understand it this camera has a capacitor that supplies the
    settings. It seems that this capacitor has failed.

    Malcolm, Jun 8, 2006
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