MRG 120 or 121 battery change
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  1. #1
    Member Fergfour's Avatar
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    MRG 120 or 121 battery change

    Anyone ever change the battery on an MRG 120/121? Simply pop out the old and pop in the new? I tried a CR2016 with a fair charge left and nothing doing. I'll try a brand new battery next. Might end up being a parts watch if that doesn't work :(

  2. #2
    Member xevious's Avatar
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    Re: MRG 120 or 121 battery change

    I have an MRG-120. I remember having the same problem. I put in a battery that was a little used but still workable (came from another G-Shock). Wouldn't fire up. No AC reset on the module, because it's not digital. I removed and replaced the battery a few times then miraculously it started to work.
    In rotation: Citizen Attesa ATV53-2834, Eco Drives | Omega Seamaster | CASIO: TW-7000, MRG-220, RevMan, G-2000D, DW-5700ML, GW-9100 | Seiko SKA-413, SBPG001

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    Member Epal2Apol's Avatar
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    Re: MRG 120 or 121 battery change

    Just simply put the new battery. I think there is no AC reset for this just like the GS-500. Try the light if it works. The illumination is so fascinating to me. Here's mine.

    Last edited by Epal2Apol; 1 Week Ago at 20:57.

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    Member Fergfour's Avatar
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    Re: MRG 120 or 121 battery change

    Thanks xevious, I was thinking about some sort of ac reset equivalent as well, so that's one less thing to cross off the troubleshooting list. Do you think the caseback has to be screwed on for some contact-related reason? I'll try a new battery and see how it goes. Then try a few more times after that lol fingers crossed.

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    Re: MRG 120 or 121 battery change

    THere's some instructions with decent pics here;
    MR-G1789drC

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    Re: MRG 120 or 121 battery change

    That's cool thanks for the link gojira54.

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    Re: MRG 120 or 121 battery change

    maybe some activate-deactivate second stop with the crown may give the movement a push to start ticking.
    xevious likes this.

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    Member xevious's Avatar
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    Re: MRG 120 or 121 battery change

    Quote Originally Posted by Fergfour View Post
    Thanks xevious, I was thinking about some sort of ac reset equivalent as well, so that's one less thing to cross off the troubleshooting list. Do you think the caseback has to be screwed on for some contact-related reason? I'll try a new battery and see how it goes. Then try a few more times after that lol fingers crossed.
    No problem. Case back shouldn't be necessary, as all that's for is connecting to the piezo speaker. The module functions independently of the case. I like d2mac's idea of using the crown to move the hands and close. Also, try pushing the back light. Did it light up? Mine is kind of dim... and I'm not sure if that's the battery or if it's how these light up. It's enough to know the time though.
    In rotation: Citizen Attesa ATV53-2834, Eco Drives | Omega Seamaster | CASIO: TW-7000, MRG-220, RevMan, G-2000D, DW-5700ML, GW-9100 | Seiko SKA-413, SBPG001

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    Member Fergfour's Avatar
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    Re: MRG 120 or 121 battery change

    Thanks for the suggestions everyone, but to no avail. No light either. I'll fiddle with it a little more but looks like I got a dud. I've been spoiled with older digital G's coming to life with a new battery, maybe I shouldn't assume the same with the older analogs. Or it's just (bad)luck of the draw. Thing is I'll probably keep it, the bracelet alone is probably worth it considering extra links are impossible to find anymore.

  10. #10
    Member xevious's Avatar
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    Re: MRG 120 or 121 battery change

    Quote Originally Posted by Fergfour View Post
    Thanks for the suggestions everyone, but to no avail. No light either. I'll fiddle with it a little more but looks like I got a dud. I've been spoiled with older digital G's coming to life with a new battery, maybe I shouldn't assume the same with the older analogs. Or it's just (bad)luck of the draw. Thing is I'll probably keep it, the bracelet alone is probably worth it considering extra links are impossible to find anymore.
    Yeah, there is a bit of a crap shoot if the watch is sold with a dead battery, where analog models are concerned. A pristine case is usually a good sign, though. Hopefully you got it very cheaply... and so now, pick up a working example with a ridiculously small bracelet that most folks won't be interested in... and you've got the links to widen it to your wrist.
    In rotation: Citizen Attesa ATV53-2834, Eco Drives | Omega Seamaster | CASIO: TW-7000, MRG-220, RevMan, G-2000D, DW-5700ML, GW-9100 | Seiko SKA-413, SBPG001

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