Seiko 7T27 Movement Or Circuit Board?

[jaycey]

Evening chaps.

 

I have a Seiko 7T27-7A20 on the bench at the moment with a damaged circuit board. The rest of the movement id fine.

Do I have any other options other than the Epson YM57A movements for sale on eBay? 

 

Cheers.

[AndyHull]

2 minutes ago, jaycey said:

Evening chaps.

 

I have a Seiko 7T27-7A20 on the bench at the moment with a damaged circuit board. The rest of the movement id fine.

Do I have any other options other than the Epson YM57A movements for sale on eBay? 

 

Cheers.

What is the damage to the circuit board? A few close up pictures might help.

[jaycey]

I'll get some photos but so far I know the tab that extends into the battery compartment is snapped off and the contact where the start/stop lever contact the board is missing.

There's also some damage near where the hacking lever makes contact.

[ro63rto]

Underneath it's the same isn't it?
I would just switch top plates if you want it to still say 7t27

[jaycey]

7 minutes ago, ro63rto said:

Underneath it's the same isn't it?
I would just switch top plates if you want it to still say 7t27

 

And change the white date wheel on the Epson for the black original.

[rodabod]

Swap the circuit if you can first, because the height of the hour wheel / canon pinion / CS pinion vary between models. Certainly the one fitted to the Seiko Gen 2 Military chronograph differs to the newest movement available. Can measure the current draw later to see if it’s running well enough to give a thumbs-up. 

[jaycey]

Yeah, that's a good idea Rod.

[jaycey]

Got the new movement today and the good news was, it is a direct swap, just had to swap the datewheels as the new movement had a white datewheel and the Seiko Gen 2 has a black one. Simple enough to do. Swapped the 7T27 battery plate over with the original Seiko markings too

All back together and working great!

[rodabod]

Love these watches! I picked up another Gen 1 last week too which has the better 7A28 movement.

[jaycey]

They are great looking watches! Might have to pair this with a Gen 1

[TexasDon]

They are nice watches, although their being so collectible has caused them to be a bit dear when buying one. How does the newer meca-quartz movement such as the Seiko VK61a compare to the original? 

[Spike]

Hello 

I am looking for a replacement for the 7T27 but can’t find the YM57A anywhere for sale. Would love to get my Gen 2 up and running again. Does anyone know of a another replacement for it??

 

many thanks 

 

seb