SEIKO 0624

[BENRUS]

Does anyone have the IC prongs mapped out so I can pin-point to the one that operates the middle line segment of seconds read out? (far right digit...middle missing segment)
I can't seem to get it working, I don't see any damage.
If anyone has a working replacement bulb that would fit nicely...I am in need of one.
Thanks for any help with this.

[Adam]

Benrus you can download the technical guide from digitalwatchlibrary that has the info you need. I'm sure I have a bulb.

regards

Adam

[BENRUS]

Hello Adam,
I looked through the guide for this info, but I could not locate the page with the mapping out of IC terminals...I will have a second look.
Thanks

[Adam]

It is in the tech guide(page 21), but the prong you want is 1G the very last prong on the top if its the middle segment of the second zero you want.

good luck

Adam

[BENRUS]

Thanks again Adam!!!
I just revisited the guide, and realized I never actually viewed the pages online...Just printed them from source to make it easier for viewing while I took the watch apart (My printer missed a bunch of pages I guess).
Everything is much clearer!
I'll contact you about the bulb...Thanks

[LEDluvr]

This is one my favorite Seiko models. Simple, elegant and to the point.
FYI Bernus, the crystal can be polished to a good clear shine. Ed was able to transform my 0624 from looking similar to yours to looking like new.

[Old Tom]

Do take care working on this watch- this is one of two Seiko models that essentially have the main IC just lying on its back unattached (well, pretty much so) to any sort of PCB. This means there are no static dissipation pathways and that is an early MOS chip which is somewhat static sensitive (!). A watch where you should be properly earthed when working on it.

A dead segment can be a bad contact (look sideways at the chip in the carrier to make sure all the legs line up at the same height) or, especially if the watch has been left with a battery in for a long time, a bad output channel. Dead channels sometimes come back to life on their own if left for a couple of months or can be "persuaded" to start switching again by very slightly over-running the chip (you need a decent voltage/current limited power supply to do this safely).

[BENRUS]

Thanks for the help
This one I am taking extra care.

[Huertecilla]

Do take care working on this watch- this is one of two Seiko models that essentially have the main IC just lying on its back unattached (well, pretty much so) to any sort of PCB. This means there are no static dissipation pathways and that is an early MOS chip which is somewhat static sensitive (!). A watch where you should be properly earthed when working on it.

Oh my...
That reminds me of a Swatch I was given. It had a metal plate in the strap with a push button through it that was meant to connect to a lead clipped to an electrostatic discharging matt as working surface.
It was one of the seven hole strap models.....
I am so that I gave it away when I moved to live on a sailing boat. You do not know what you do not know meets Murphy was illustrated by me storing only the wrong things

[james_stan]

Well I'll be blowed ! I always thought the reflector was yellow/green on these not just the crystal. Does that mean the crystal is acrylic and easier to polish than the glass b*ggers ?

Cheers

James

[Adam]

No the crystal is hardlex or glass. there is a thin sheet of coloured acrylic in front of the lcd and the behind the glass. No easy polish here I'm afraid.

Adam

[james_stan]

No the crystal is hardlex or glass. there is a thin sheet of coloured acrylic in front of the lcd and the behind the glass. No easy polish here I'm afraid.

Hey ho. As my father would have said 'life was ever thus..'

Cheers


James