BM-500W not waking up...
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  1. #1
    Member kosio's Avatar
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    BM-500W not waking up...

    Bought this nice looking, almost mint, BM-500W from eBay.
    The ad said that it was not working, but one of the pictures showed the opened case without batteries, on that same pic I saw that all the springs were still present.
    So I thought that mounting a set of new batteries and an AC resetwould bring the watch back to life, but unfortunately it didn't...
    There are no visible signs of batteryleaks.

    Here the pics from the eBay ad
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    I would really like to restore this watch as it is in superb cosmetic condition. I already have bought a brand new, watch specific, original Casio replacement strap.

    Why won't it wake up? :(

  2. #2
    Member kosio's Avatar
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    Re: BM-500W not waking up...

    Took apart the module this evening.
    By doing that it became clear that the watch had suffered from leaking batteries. Also the flat cable that connects the sensor to the motherboard broke off.

    Might sell it again for parts. Ideal for someone who has a good working module, but a worn case.

  3. #3
    Member Steelerswit's Avatar
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    Re: BM-500W not waking up...

    That stinks, just had the same issue with a, G-350. Now I need a module for a mint band and bezel.

    Never hurts to try.

    Sent from Capt Kirk's Communicator
    Dxnnis and kosio like this.
    Call Sign - Wit
    Si vis pacem, para bellum
    Quote Originally Posted by kubr1ck View Post
    the benevolent caretaker of a halfway house for recovering G-Shocks.
    Quote Originally Posted by kubr1ck View Post
    And the grand rehabilitator strikes again.
    Quote Originally Posted by Time4Playnow View Post
    For most of us, when we wear a bad-a** watch, the characteristics of the watch "bleed over" to us -- and suddenly, WE are bad-a**es!
    For some members here though -- like Steelerswit, and Kubr1ck -- they have so much inherent "bad-a**ery" that when they put on a bad-a** watch, the energy flows from them TO the watch, making the watch EVEN MORE bad-a**!!! Yes, it's a real scientific phenomenon that obscure mad scientists only recently discovered.

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  5. #4
    Member kubr1ck's Avatar
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    Re: BM-500W not waking up...

    What a shame. That thing is a beauty.
    Dxnnis, kosio and acadian like this.
    "When the shadow of the sash appeared in the curtains it was between seven and eight o'clock and then I was in time again, hearing the watch. It was Grandfather's and when Father gave it to me he said I give you the mausoleum of all hope and desire.... I give it to you not that you may remember time, but that you might forget it now and then for a moment and not spend all your breath trying to conquer it."
    --William Faulkner, The Sound and the Fury (1929)

  6. #5
    Member Dr. Wong's Avatar
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    Re: BM-500W not waking up...

    Have you try these?
    Name:  defibrillator-paddles.gif
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    kosio and Dxnnis like this.

  7. #6
    Member Cowboy Bebop's Avatar
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    Re: BM-500W not waking up...

    Quote Originally Posted by kosio View Post
    Bought this nice looking, almost mint, BM-500W from eBay.
    The ad said that it was not working, but one of the pictures showed the opened case without batteries, on that same pic I saw that all the springs were still present.
    So I thought that mounting a set of new batteries and an AC resetwould bring the watch back to life, but unfortunately it didn't...
    There are no visible signs of batteryleaks.

    Here the pics from the eBay ad
    Name:  s-l1600.jpg
Views: 119
Size:  106.8 KB

    Name:  s-l1600 (1).jpg
Views: 120
Size:  112.2 KB

    Name:  s-l1600 (2).jpg
Views: 118
Size:  161.7 KB

    Name:  s-l1600 (3).jpg
Views: 122
Size:  130.5 KB

    Name:  s-l1600 (4).jpg
Views: 116
Size:  79.6 KB

    Name:  s-l1600 (5).jpg
Views: 116
Size:  85.6 KB

    I would really like to restore this watch as it is in superb cosmetic condition. I already have bought a brand new, watch specific, original Casio replacement strap.

    Why won't it wake up? :(
    Kosio, I may sound crazy in this but the upper conductor appears rusted? Have you noticed it?Name:  20181018_173807.jpeg
Views: 91
Size:  62.4 KB

    Sent from my SM-G955U using Tapatalk
    Dxnnis likes this.
    TAG Heuer Collector.


  8. #7
    Member kosio's Avatar
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    Re: BM-500W not waking up...

    So ever since I started this thread, I saved a query in eBay so that I would be notified whenever another BM-500 would be presented.
    Many passed but for incredibly steep prices.
    Until the other day, the watch I was looking for and that I needed to finish above project showed up on eBay.
    There were some bidders, but the bidding didn't go that great, so I ended up with a working BM-500 for only 22,5 euro!
    The band is very rigid and there are quite some scratches on the crystal and the display has faded, but all that does not matter, the module works!
    So I will take the case and the lcd from the first watch and put in the module and sensor from the second watch and to finish it off I will put on that brand new BM-500 strap that I bought a while ago.

    Here are some of the sellers pics:
    Name:  s-l1600.jpg
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    Name:  s-l1600 (1).jpg
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  9. #8
    Member Steelerswit's Avatar
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    Re: BM-500W not waking up...

    Great news, as mentioned with my G-350, I found a mint condition one at a great price... And had to pounce.

    So good tidings all around!

    Sent from Capt Kirk's Communicator
    Dxnnis, kosio and GaryK30 like this.
    Call Sign - Wit
    Si vis pacem, para bellum
    Quote Originally Posted by kubr1ck View Post
    the benevolent caretaker of a halfway house for recovering G-Shocks.
    Quote Originally Posted by kubr1ck View Post
    And the grand rehabilitator strikes again.
    Quote Originally Posted by Time4Playnow View Post
    For most of us, when we wear a bad-a** watch, the characteristics of the watch "bleed over" to us -- and suddenly, WE are bad-a**es!
    For some members here though -- like Steelerswit, and Kubr1ck -- they have so much inherent "bad-a**ery" that when they put on a bad-a** watch, the energy flows from them TO the watch, making the watch EVEN MORE bad-a**!!! Yes, it's a real scientific phenomenon that obscure mad scientists only recently discovered.

  10. #9
    Member kosio's Avatar
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    Re: BM-500W not waking up...

    So yesterday history was made by the merge of the 2 BM-500's.

    Behold, the ingredients:
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    A new strap, the good looking one and the working one. Together they will form the ultimate BM-500

    I started with dismantling the working watch:
    Name:  IMG_20190712_100541 (Middel).jpg
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    The parts I will be using from this picture: module (white thing on the left that says 'Do not turn') and sensor (the little thing on the right with the orange flatcable connected to it).

    As the red part of the LCD of the working one had faded over the years, I decided to take the module apart as well:
    Name:  IMG_20190712_101320 (Middel).jpg
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    Top left: battery holder, the green thing: main PCB, next to it: the LCD, bottom: display holder

    What I noticed during the dismantling of the working one:
    - it has had a rough life (seen the dirt, rust and scratches)
    - both sensor springs are missing
    - back cover seel has dried out
    - sensor O-ring has dried out as well and very stiff

    Some pictures to illustrate above:
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    Name:  IMG_20190712_114028 (Middel).jpg
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    Then I basically did the same thing for the looker.
    The parts I was going to use from that one:
    - housing
    - back cover seel
    - sensor O-ring
    - sensor springs
    - LCD

    As soon as I put the module back together with the 'new' LCD, I tested it by putting batteries back in. My disappointment was huge when the module didn't come to life!! I tried an AC, friggled a bit with it, but no luck... must have been damaged as well during the battery leakage... So took the LCD out again and put the 'old' one back in. Testing... and it worked... Bit of a bummer, but hey, the case was still very nice!

    I then continued by putting the watch back together. Mounted the module in the housing, connected the old sensor (after having it cleaned) to the main PCB, greased the seel and O-ring before placing those back, made sure that all the springs were in their proper place, closed the lid and put on the new strap.

    All by all very happy with the result:
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    BUT... then I realised that during the mounting of the LCD, the black connectors between LCD and PCB had fallen out and that I had put them back in.... So I could not help thinking that something must have gone wrong there... so I decided in the middle of the night to take the watch apart once more to test the new LCD again.

    Guess what... IT WORKS!!!

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    The fairest of them all...

  11. #10
    Member Dxnnis's Avatar
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    Re: BM-500W not waking up...

    Great job @kosio looks mint now. Such a beauty,enjoy
    kosio likes this.
    Dennis
    G-Shocks
    GW-M5610-1ER.......GW-M5610-1BJF
    GX-56BB-1ER...........DW-5600HRGRZ-1ER
    GW-7900-1ER..........GD-100-1AER
    GA-201-1AER

    Citizen promaster AJ0100-02E
    + Various other makes

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