Sunday, May 2, 2010

Casio W 780

One of the last watches I have is the Casio W-780, it is a rare old classic Casio watch. There are 2 versions, the W780C from the 1987 and the W780C-1V(B) from the 1991. The retail price for both watches was 39.95USD.
The watch case is made of steel, not chrome plated plastic as modern vintage series. The watch is very heavy for its size. And Japan made, not China or Malaysia as modern vintages.
It is water resistant 100m and has stopwatch, countdown, alarm, light, date and hour.
The glass screen is scratched and quite difficult to polish, but the steel case has been polished to remove the scratches and leave the watch ready to wear (well, first of all I have to buy a band for it).

10 comments:

  1. Great Vintage!
    Wait a minute, Aren't you SexMachine from HDR?
    Hablemos de Relojes Forum?

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  2. Nop! I'm Ultraputa :) in HDR and FDR; ttravesa in RE.
    I need to polish the glass, but I don't know how. I'm not sure if a diamond polishing paste will be OK.
    The band is easy, it's "only" money.

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  3. Hi,

    have one of these as well, but the movement seems to be defective - any way of getting a replacement somewhere?

    Thanks!

    Dirk

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  4. Are you sure the movement is defective? these old Casios are very hard watches :)
    The only way I know to find these kind of movements is from ebay. You can buy a damaged watch to use the movement. Usually watches with damaged LCD screens have low prices but the movements remain in good condition.
    I'm not an expert but if you want you can send me some pictures of the movement and I can take a look to them and if possible suggest you anything to repair it...
    I suppose you cleaned the movement, short circuited it after the battery replacement, etc...

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  5. Hello what battery does the Casio W-780 use.

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  6. It has a CR 2012
    I have one of those as well, but it's made in Thailand.
    I've seen others "made in Korea"
    Wouldn't give it away for any reason :)
    I have polished the glass recently using an orbital sander with grit 4000 then a polish 6000 -> 11k(festools polish)
    I've grinded the glass down to be level with the metal and have much less scratches since.

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    Replies
    1. The 549 module uses a CR 2016 battery (not a cr2012)

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  7. I have a W780, bought new many years ago but still works, in a fashion. Although it still keeps time, the function buttons no longer work as they should so time settings & mode changes are now no longer possible. What do i need to do to it, by way of cleaning (?) to get these functions to work again? Or is the module kaput? I'd like to keep it all original as possible.

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  8. I don't think the module is broken, first of all try to restet the module. You must short circuit the battery and somewhere in the module. Usually the module has a "reset" marking on it. Try to reset it several times and keep the short circuit for some seconds.

    If it do not works take a look to the small metal springs that make the contact on the module (just under de buttons). some times the leaf springs are bended due to the use and you just have to bend it back to the original position to allow the button stem to push the leaf spring.

    If this is not the problem... things become harder, you need to check continuity from the button to the PCB and then along the PCB, you'll need a tester. I hope one of the 2 first options will work

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  9. If all the buttons don't work, the most likely cause is a small leaf spring element on the metal ring surrounding the module, which permanently connects the ring to the PCB. The spot where it touches the PCB is often corroded and has to be cleaned. I like to use a glass fibre pen for this. Also clean the spots where the buttons touch the PCB in the same way.

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