Seiko A159 restoration
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  1. #1
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    Seiko A159 restoration

    This was my father's, who passed away 5 years ago. It's a very well travelled watch, seen 10+ years in Africa, the middle East and a few trips to the far East.

    The battery cover slot has rounded off a bit and wouldn't open, but it was easy to prise off the whole back cover. There was a tiny bit of moisture inside strangely, maybe water or perhaps a small leak from the battery.

    A new battery has been ordered.

    Is the cover brass, or plated? On the edges it looks like a plating that's worn slightly, being silver underneath, which i guess means polishing the scratches is a no go, because it would remove more of the plating.

    Any other tips on how to refurbish this a bit?

    I checked eBay but didn't see any spares apart from crystals. It could do with a new bracelet. Is fitting a screen difficult?

  2. #2
    Member Black5's Avatar
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    Re: Seiko A159 restoration

    Subscribed.
    There are workshop manuals online.
    If I can find the link I’ll post it.


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  3. #3
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    Re: Seiko A159 restoration

    Thanks. By the way, I have probably been unclear, this is all new to me, and it was more of a request for tips than the start of a how-to!!

    First thing is to see if the module works with a new battery I think. After that we can see what else can be done

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  5. #4
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    Re: Seiko A159 restoration

    The reason you could not get the battery cover off was because the little o ring that was attached swelled and locked it into place. My advice to you is to not try to open that battery door as the gasket could crumble and then you will not be able to lock the battery door in place. You should try to source a new gasket for this.

    The other bad news is that to get the back on the watch again, you will need a crystal press to pop it back on.

    This is what happened to me with my Seiko A129 (which is the predecessor of your watch)

    However with a new battery my watch came back to life and even the light still worked

    Good luck with yours
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  6. #5
    Member Black5's Avatar
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    Re: Seiko A159 restoration

    You might find this site useful

    http://www.thewatchsite.com/14-user-...tml#/topics/15

    In particular this link

    http://thewatchsite.com/files/Seiko%...uals/0159A.pdf

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  7. #6
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    Re: Seiko A159 restoration

    Thanks. That pdf link doesn't work for me. I googled around for it, and found another PDF but it's just a parts list.

    Is that file a full manual?

    Fun fact - has anyone noticed the writing on the A159 module that says how many jewels it has? It's in binary. Very neat. I think its "0101 jewels" !!

  8. #7
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    Re: Seiko A159 restoration

    I may have linked the wrong one.

    Try these.

    A159A technical guide
    http://www.thewatchsite.com/files/Se...uals/A159A.pdf

    M159A Technical guide
    http://www.thewatchsite.com/files/Se...uals/M159A.pdf

    I can download and email them to you if you want to PM me.
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  9. #8
    Member TimeArtPiece's Avatar
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    Re: Seiko A159 restoration

    This is a nice and very practical vintage Seiko LCD with a personal history, what more would one want! There is still a decent amount of Seiko A159 watches and parts out there.
    If I'm not mistaken it's an A159-5009 and I've got some additional information on my site (part#, links to documents): Seiko A159-5009 Gold | Time Art Piece

    Name:  Seiko-A159-5009-gold-06_0.jpg
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    The original bracelet would be a Z-168.
    How to replace the crystal is described in the service manual. The crystal often breaks if you are pressing it out but to put the new one in is easy. Usually you can reuse the gasket.
    It's quiet hard to reassemble the case of an A159. You ideally use a press with the appropriate supports. Putting the case back in the freezer and warming the case in your hands before reassembling will help to reduce the necessary pressure.
    Besides of replacing the crystal and maybe the front cover and buttons I personally wouldn't try to refurbish the watch. The patina tells its history.
    Paradroid and xevious like this.
    My vintage watch collection - mostly 1970s digital Seikos: timeartpiece.com

  10. #9
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    Re: Seiko A159 restoration

    Thank you all so much for the help. I've got the service manual now and that clears a few points up nicely.

    @TimeArtPiece, yes it's that model exactly. I take it a Z-168 would not be easy to find except for purchasing another watch? I can't find one on the web.

    Some good news already - ordered a battery today and here's the result:
    Name:  IMG_20180312_124546.jpg
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    Last edited by Paradroid; March 12th, 2018 at 15:31.

  11. #10
    Member TimeArtPiece's Avatar
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    Re: Seiko A159 restoration

    Good to hear that the module still works and the LCD looks acceptable too!
    The bracelets usually aren't sold separately and a golden A159-5009 in good condition is hard to find. But if you are patient enough and search eBay frequently you'll find one.
    There is a Z-168 bracelet on eBay Spain but unfortunately its a silver one.
    Paradroid likes this.
    My vintage watch collection - mostly 1970s digital Seikos: timeartpiece.com

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