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Discussion Starter · #1 ·
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Just acquired this stunning Seiko H461A (circa 1985).
It was love at first sight and reminiscent of my school days as I remember these in the jewellers shops!

The seller said it just required a battery replacement.
BTW: The best battery is Seizaiken - SR41W (392)

As I struggled taking the case back off, I had to take cough up and invest in a case back opener and
a watch press tool with a selection of dies.

It came off effortlessly!

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Having taken the back off, I decided to clean-up the inside with alcohol and an earbud.

In the process, a little brass spring (see picture) popped out.
I think it was from the location marked with the arrow, but I could be wrong.

Is there anyone out there familiar with the part and where it goes (I presume leg downwards)?

Help with be greatly appreciated :)
 

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Discussion Starter · #2 ·
View attachment 463527 View attachment 463529 View attachment 463530 View attachment 463532

Just acquired this stunning Seiko H461A (circa 1985).
It was love at first sight and reminiscent of my school days as I remember these in the jewellers shops!

The seller said it just required a battery replacement.
BTW: The best battery is Seizaiken - SR41W (392)

As I struggled taking the case back off, I had to take cough up and invest in a case back opener and
a watch press tool with a selection of dies.

It came off effortlessly!

View attachment 463533

Having taken the back off, I decided to clean-up the inside with alcohol and an earbud.

In the process, a little brass spring (see picture) popped out.
I think it was from the location marked with the arrow, but I could be wrong.

Is there anyone out there familiar with the part and where it goes (I presume leg downwards)?

Help with be greatly appreciated :)

Found the location for the brass spring, thanks to an online picture.
Problem solved !

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Neat! Looks like it has one of those piezoelectric disks in the case back too. The coil needs to touch that disk for the alarm to sound I believe.
 

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Discussion Starter · #5 · (Edited)
Neat! Looks like it has one of those piezoelectric disks in the case back too. The coil needs to touch that disk for the alarm to sound I believe.
Grammarofdesign thank you so very much for your reply. You have TRULY saved my day. God Bless you. 🙏🏼 :)
NevRo - I shall finish the project tomorrow. 🤞🏼Hope it all works.
 

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beautiful Digi-Ana. i like those watches - they're cool. congrats.
 

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those watches are so often thread-bare in their wear. they got used. that's a nice example ....
 

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Discussion Starter · #9 · (Edited)
That would be part #9 in the sketch buzzer lead terminal. Basically it shorts to the case back when closed.

View attachment 463545
I have tried numerous times, but the trailing wire you refer to is not long enough to go into the hole you are indicating.
There is another hole closer to the white stud (Green arrow).

I think it should fit into that one.

Looking at your diagram closely 'Grammarofdesign' the trailing wire should go into the hole with the green arrow.

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Discussion Starter · #10 ·
Could anyone advise on the procedure to remove the stem and the movement on this watch please.
I'm thinking about replacing the crystal.

Help most appreciated :)

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Discussion Starter · #11 ·
those watches are so often thread-bare in their wear. they got used. that's a nice example ....
Thank you my friend. It is a beautiful, elegant timepiece. Very comfortable to wear and not dominating on the wrist. Look forward to finish working on it.
 

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I have tried numerous times, but the trailing wire you refer to is not long enough to go into the hole you are indicating.
There is another hole closer to the white stud (Green arrow).

I think it should fit into that one.

Looking at your diagram closely 'Grammarofdesign' the trailing wire should go into the hole with the green arrow.

View attachment 463547 View attachment 463548
Excellent! Thank you for the correction. Nice photo showing the detail.

I was just going by the exploded view diagram.
 

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You are making great progress here. Keep going. Watching with interest.
 

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Discussion Starter · #17 · (Edited)
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Got the watch back together with everything in place (using my new watch press) but the Alarm / Hourly chime does not seem to be working 😠

Opened it up again to test the output voltage

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I got an intermittent reading which suggests NORMAL.
The Piezoelectric element on the case back seems to be OK with no cracks, chips or peeling.

So may have to live with it for a while.
Such as shame, as it would have been lovely to have the alarm and hourly chime working.

Wanted to buff out the tiny scratches / possibly replace the crystal but that will be for later consideration.
For now I'm happy to see it working. 😎
 

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Discussion Starter · #18 ·
There was a glimmer of hope when I opened and closed the back (making sure the notch on the case and case back are aligned) again today.
I set the alarm and heard it (very faintly) !

I cannot see damage to the Piezoelectric element on the case back.
Only thing I did was clean it with an alcohol swab.

Sadly I could not get it to work again. :(

Anyone had a similar problem and found a solution?

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