Need Help! CMOS Battery Failed VMX42 (2005)

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    Default CMOS Battery Failed VMX42 (2005)

    Hi
    I have a failed battery in my Hurco VMX42, does anyone know where the battery Located, and what dose it look like?
    I assume I will need to reload some settings/parameters also?
    Any help greatly appreciated.
    [ATTACH=CONFIG]367918 [ATTACH=CONFIG]367920

    Best regards
    Burgs

    Similar Threads:
    Attached Thumbnails Attached Thumbnails CMOS Battery Failed VMX42 (2005)-cmos-battery-failure-jpg   CMOS Battery Failed VMX42 (2005)-20170716_125600-jpg  


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    Default Re: CMOS Battery Failed VMX42 (2005)

    as no members with a Hurco VMX42 has answered

    If your lucky the battery will be in a battery holder
    but its possible they have used a battery that is soldered in
    (to try to ensure you have them service your machine ???)

    going by the bios date I don't expect the CMOS battery to be hidden in a DALLAS DS1287 or DS1387 real time clock IC like this
    CMOS Battery Failed VMX42 (2005)-dallas-rtc-jpg

    I expect its more likely to be either a CR2032 "coin cell" as found in many PC's
    CMOS Battery Failed VMX42 (2005)-pc-cr2032-cmos-battery-holder-jpg

    or for example a CR1/2 AA as used in a HASS SR100
    CMOS Battery Failed VMX42 (2005)-hass-sr-100-battery_new-jpg

    DIY HASS battery replacement
    alarm 124 low battery

    John



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Thanks John
    Would be nice to know where it is hidden?
    Hopefully it is a CR2032
    Have contacted Hurco agent in Melbourne they usually have to contact Hurco technicians in Asia Pacific, hopefully they will come through.
    I think I may have the settings from them before for another issue.
    Best regards
    Burgs



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Hi
    Might have found the battery?
    Cannot see any information on it yet though.

    CMOS Battery Failed VMX42 (2005)-20170717_112421-jpg

    Best regards
    Burgs



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Burgs
    That is the options dongle. it holds the keys to the machine options. judging from the picture above your machine has a MX4 motion board and from the post screen you have a peak570 CPU. It uses a battery like the first picture in John-100 post DALLAS DS1287.
    Remove the cover with the four thumb screws on it in the electrical cabinet. the CPU board will have a heat sink and a fan o it. The battery chip is in a socket with a cable tie keeping it in place,
    Sometimes it can be replaced with a new one and every thing is fine. Trick to these batteries when you buy one new the battery is not turned. I have replaced them before on the peak 570 only had one that would not turn the battery on.
    buy one for 13 dollars and try it out. set the time and date on the CPU set up. turn it off and see if it sticks. If it does then you can go through and set the bios setting. and you are done



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Hi power
    Thanks for that, have been backwards and forwards with Hurco and we have identified it now just waiting for more instructions, as well as trying to chase up a new one locally.
    Is the battery soldered in place or pulled in and Zip tied there?
    I guess the motherboard needs to be removed to allow access to the battery, any issues to look for when doing that?
    May just have found one in Sydney for $5.90
    CMOS Battery Failed VMX42 (2005)-inkedimg_7498_li-3-jpg
    Best Regards
    Burgs



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Hi John/Powerr
    I am unable to source a Dallas DS1287 but can get a DS12887 that is a direct replacement?

    Should the DS12887 have an A at the end of it ie DS12887A as I cannot locate one at this stage?
    Apparently without an A it is password protected?

    I have a DS12887 on the way.

    Best regards
    Burgs



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    Default Re: CMOS Battery Failed VMX42 (2005)

    yes , the DS12887 is the drop in replacement ( I see RS components have it )

    from the Data sheet

    "What is the difference between the DS12887 and DS12887A?
    The "A" at the end of the part number indicates a "RAM clear" pin.
    This is true for many clock modules, including those from other manufacturers.
    The DS12B887 also has a RAM clear function; however, it works differently than the "A" RAM clear. "

    CMOS Battery Failed VMX42 (2005)-dallas-12887-rtc-data-pdf

    John

    PS
    from one of many DIY DS1287 repair posts on the web
    Reworking the DS1287 / DS1387 RTC chip

    the module has is a battery connected to pins 16 & 20
    CMOS Battery Failed VMX42 (2005)-side-view-modded-chip-note-battery-holder
    CMOS Battery Failed VMX42 (2005)-curiosity-killed-cat-jpg



    the DS12885 IC is a version of the IC inside of the module is produced that you connect an external 32.768kHz watch crystal & battery

    CMOS Battery Failed VMX42 (2005)-ds12885-jpg

    Last edited by john-100; 07-17-2017 at 07:41 AM. Reason: add ref to 32.768kh crystal


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    Default Re: CMOS Battery Failed VMX42 (2005)

    Hi
    I removed the RTC today and it is a STM from Malaysia, M48T86PC1 W1653Z have contacted an AU distributor and he has sent details to Malaysia to see if they have either a new one or a replacement.
    looked at the modification to add a 3.2V battery, went and bought what I needed as I thought this was a good option but, when I removed the STM unit I didn't know where to tap the battery in as the STM unit has all 24 Pins still, as well as being rated at 4.5 to 5.5 volts?
    I will have a day off tomorrow, got a ride day on my 1972 Norton Commando so will see what happens when I get back tomorrow afternoon, jobs are starting to pile up, which is not good as it has been quite for a while.
    CMOS Battery Failed VMX42 (2005)-rtc-vmx42-3a-jpg
    CMOS Battery Failed VMX42 (2005)-rtc-vmx42-1-jpg

    Regards
    Burgs



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    Default Re: CMOS Battery Failed VMX42 (2005)

    does this help ?
    M48T86 data
    CMOS Battery Failed VMX42 (2005)-m48t86pc1-datasheet-pdf

    combining diagram from M48T86 data sheet and Reworking the DS1287 / DS1387 RTC chip

    M48T86 battery connections
    CMOS Battery Failed VMX42 (2005)-m48t86pc1-battery-connections-jpg

    John



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    Default Re: CMOS Battery Failed VMX42 (2005)

    Quote Originally Posted by john-100 View Post
    does this help ?
    M48T86 data
    CMOS Battery Failed VMX42 (2005)-m48t86pc1-datasheet-pdf

    combining diagram from M48T86 data sheet and Reworking the DS1287 / DS1387 RTC chip

    M48T86 battery connections
    CMOS Battery Failed VMX42 (2005)-m48t86pc1-battery-connections-jpg

    John
    Thanks heaps John
    Should be able to work out from there, but will the CR2032 Battery 3.2V be ok?

    Regards
    Mark



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    Default Re: CMOS Battery Failed VMX42 (2005)

    yes , the CR2032 is what was used in Reworking the DS1287 / DS1387 RTC chip

    CMOS Battery Failed VMX42 (2005)-8565_clock-jpg

    in the same thread to add an external CR2032 to the Dallas RTC
    the original battery connection was cut so the new battery does not charge the old battery

    for comparison
    the pinout of the ST M48T86 v DALLAS DS12887 pin out
    CMOS Battery Failed VMX42 (2005)-st-m48t86-v-dallas-ds12887-pin-jpg


    John



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