Seiko G757... oh my octopussy

[camrok]

As many of you know I hold my G757 as one of my Gail's
I went to wear it the other day and was dismayed to find it looked like this.
It's been 2yrs since battery replacement.

I opened it up and put a temporary battery in (wrong height) to ensure it was fine- as a saw a tiny bit of corrosion near the battery.
That's when I had my first glimpse of pending doom.
Light but no LCD!
So I ordered the right battery and figured there may be a contact issue caused by the green goblin!

So this morning the battery arrived and I opened it up.
First battery cover then top down.



Cleaned it with a lens cleaner. I figured it's alcohol based and lint free.
Green goblin lifted from multiple points on contacts and circuit board and LCD contacts.

Popped it back together,armed it with the right battery and flipped it over.


What starts with F and rhymes with truck.

Well you get the picture.
I'll use some more alcohol ;( and give it another shot tonight. But from my experience, looks like I'm hunting another module.

[Tyrone Jenkins]

Sorry to hear of your loss.

Maybe send it to an expert before assuming the module is dead.

And I am sure you know donor watches are pretty expensive as everyone else with a dead Silverwave or Sports is trying to keep their more expensive than the dress watch models still running.

[Groundhog66]

Damn, that sucks.....are the modules somewhat easy to acquire?

[camrok]

There available. A poorly advertised one or lucky buy it now can nab a working module for $150-$200 when I was looking 2 years ago.
I know it's a first world problem and will play the long game to get this sorted.
I have done it once before.
i just have to remember I got this watch for $2 and am currently in front $300-500 with all my buying and selling that went into getting a working module for this.

[tritto]

Ah shit. I know how hard you worked to get that one as good as you could. Hopefully you can sort it out, or Adrian can if you can't. I'll keep an eye out for a donor.

[Deleted]

What brand of battery leaked in your watch?

[camrok]

Apr 6, 2017 18:02:08 GMT -8 @penguinbce said:

What brand of battery leaked in your watch?

Maxwel. But I think it's possibly humidity or moisture. The battery looked fine. The seal looks too fat for that case.

[Deleted]

Apr 6, 2017 18:06:14 GMT -8 camrok said:

Apr 6, 2017 18:02:08 GMT -8 @penguinbce said:

What brand of battery leaked in your watch?

Maxwel. But I think it's possibly humidity or moisture. The battery looked fine. The seal looks too fat for that case.

Bummer but at least if it is only humidity, you can eventually chase down and clean the corroded pieces.

[sdoocms]

Bummer, I hope it all works out for you.

[cobrajet25]

These modules are VERY fiddly.  Keep playing with it.  I had a dead one for years that I had to mess around with on a couple different occasions before I finally got it working.

[camrok]

Apr 7, 2017 2:54:45 GMT -8 cobrajet25 said:

These modules are VERY fiddly.  Keep playing with it.  I had a dead one for years that I had to mess around with on a couple different occasions before I finally got it working.

What did you do?

[cobrajet25]

Apr 7, 2017 4:22:27 GMT -8 camrok said:

Apr 7, 2017 2:54:45 GMT -8 cobrajet25 said:

These modules are VERY fiddly.  Keep playing with it.  I had a dead one for years that I had to mess around with on a couple different occasions before I finally got it working.

What did you do?

I wish I knew!

[camrok]

I've wiped the contacts and the LCD strip contacts with isopropyl. My only suspicion at the moment. is the gaps in the contact plate where the battery contact arms meet. I've circled it. The other circle with green muck is sorted.

[Adrian-VTA]

What he said.

Apr 7, 2017 2:54:45 GMT -8 cobrajet25 said:

These modules are VERY fiddly.  Keep playing with it.  I had a dead one for years that I had to mess around with on a couple different occasions before I finally got it working.

[doomguy10011]

Damn, that's sad about that watch. Looks like a real gem!
Hope it works out for you.

[camrok]

I get brief moments of joy and then it flakes out on me.
Literally seconds before it was absolutely perfect.
Bang head.

[camrok]

Like now it's working perfectly. This time I shifted the contact of the battery slightly to land 1/2 millimeters differently on the circuit board. We will see.

[cobrajet25]

Glad it's working.  Told you they were fiddly!

[camrok]

I have left this thread dormant for a few months. The module died and embarked on finding a new module. Without all the details I sent my dead G757 to Adrian who confirmed my suspicions. The circuitry around the power supply was flaking.

So he did this.

Then this

Then this.

And now I have this.

Many many thanks to Adrain Adrian-VTA.

[catkicker]

Very cool....great to see it working, it was to the point that there was nothing to loose with a solder repair.