Epson equivalent of Seiko 5t52a

[rob3rto]

Hi all experts

I have recently acquired an almost mint World Timer 5t52-6a40 that uses the 5t52a movement but the circuit is borked by acid.



I know there are some Epson equivalents of other Seiko movements but can't confirm if they do one for the 5t52a.

Any ideas?

[ajkrik]

I have a couple I've demolished in my early days of exploration that may still be functional - no guarantees.

[rob3rto]

Apr 21, 2018 10:30:59 GMT -8 ajkrik said:

I have a couple I've demolished in my early days of exploration that may still be functional - no guarantees.

Hi
Do you have any circuit blocks removed from their movement?

[ajkrik]

I do. If you have a shot of it post it so I can compare. I believe I have two but can't be positive the circuits are perfect. I tore the movements down long before I knew what I was doing.
You're welcome to them.



Tell me if these look right.

[rob3rto]

Hmmm, Tapatalk up to its usual tricks not sending me notifications.

This is my one

[rob3rto]

Any idea if yours are from the a or b movement version? I believe they're different enough not to work in opposite movements.

[ajkrik]

I don't know if it's a or b. I'll look more closely at the schematic wiring.
One has a broken line in the circuit near the ground terminal. It's probably not worth the trouble.

[rob3rto]

Thanks for checking them.
Yes the broken track one is best avoided until I learn to micro solder which is never

[ajkrik]

Good luck. I've be inspired now to try to resurrect the ones I've got.

[rob3rto]

Just found out from a supplier that there are NO Epson equivalent movements for the 5t52