Hamilton Electric - gets power, sets time, hands don’t tick

[JohnR725]

On 3/25/2025 at 8:14 AM, AndyGSi said:

demagnetiser

interesting strategy for an electric watch which typically will have permanent magnets that really don't like to be demagnetized even if they are listed as permanent.

On 3/25/2025 at 8:14 AM, AndyGSi said:

Have you got any test equipment

typically I've given up with that question because it's wishful thinking that anyone would have test equipment beyond the DVM. Test equipment for electric watch would be a variable voltage power supply, some way of measuring microamp current and a DVM for resistance and voltage.

 

On 3/24/2025 at 5:22 PM, GuyMontag said:

I finished up one of these (9154) earlier this month and am wearing it now.

while they look almost identical at least to the casual  observer I don't think this is a 9154 which is why attached the technical up above for 9150. But to be thorough I will attach the technical for the 9154 and some images I  found on the Internet so 9150 as for contacts for the coil assembly with one home attached to a screw.

than the 9154 only has three contacts

the 9154 as a different coil arrangement were now it only has three terminals none of which are attached to the screw. So the image down below of this watch is a 9150. Although not the same all of the cleaning procedures testing etc. will all be identical other than the coil resistances current consumption will probably be a little bit different.

 

On 3/25/2025 at 8:17 AM, GuyMontag said:

Be careful doing that. There are a couple of videos on youtube of people servicing the 9154 and neither remove the balance correctly. It is very easy to damage the coils if you don't follow the exact procedure shown in the tech sheet, which requires the movement to be removed from the case.

yes the joys of YouTube watch repair where nobody ever reads the tech sheet and is unaware of the impending doom that they typically never have but anyone following will. Yes you definitely want to look at the tech guide before you even begin the disassemble or it will be not a happy outcome.

 

On 3/25/2025 at 9:04 AM, edrelich said:

It sounds like I’ll be selling this thing as is and moving on! Anyone want it for $100? Ha

On 3/24/2025 at 9:35 AM, edrelich said:

Any thoughts? Where would I apply oil or lighter fluid?

if you are hoping for a quick squirt of lighter fluid and the watch would run I think you're out of luck. Electric watches typically have very little power and require the gear train to be extremely free moving in other words no sticky oil at all. in addition to when people change batteries it's very bad to get anything like old battery corrosion or anything else into an electric watch. So basically no quick fix here.

3540_ETA 9154.pdf

[GuyMontag]

8 minutes ago, JohnR725 said:

interesting strategy for an electric watch which typically will have permanent magnets that really don't like to be demagnetized even if they are listed as permanent.

typically I've given up with that question because it's wishful thinking that anyone would have test equipment beyond the DVM. Test equipment for electric watch would be a variable voltage power supply, some way of measuring microamp current and a DVM for resistance and voltage.

 

while they look almost identical at least to the casual  observer I don't think this is a 9154 which is why attached the technical up above for 9150. But to be thorough I will attach the technical for the 9154 and some images I  found on the Internet so 9150 as for contacts for the coil assembly with one home attached to a screw.

than the 9154 only has three contacts

the 9154 as a different coil arrangement were now it only has three terminals none of which are attached to the screw. So the image down below of this watch is a 9150. Although not the same all of the cleaning procedures testing etc. will all be identical other than the coil resistances current consumption will probably be a little bit different.

 

yes the joys of YouTube watch repair where nobody ever reads the tech sheet and is unaware of the impending doom that they typically never have but anyone following will. Yes you definitely want to look at the tech guide before you even begin the disassemble or it will be not a happy outcome.

 

if you are hoping for a quick squirt of lighter fluid and the watch would run I think you're out of luck. Electric watches typically have very little power and require the gear train to be extremely free moving in other words no sticky oil at all. in addition to when people change batteries it's very bad to get anything like old battery corrosion or anything else into an electric watch. So basically no quick fix here.

3540_ETA 9154.pdf 2.21 MB · 0 downloads

I realized the OP had a 9150, the stop lever being underneath and not on top of the setting lever jumps out at you. The servicing is more or less the same though.

[AndyGSi]

8 minutes ago, JohnR725 said:

interesting strategy for an electric watch which typically will have permanent magnets that really don't like to be demagnetized even if they are listed as permanent.

Taken from the manual..

[JohnR725]

 

4 minutes ago, AndyGSi said:

Taken from the manual..

typically when people use a demagnetizer they like to do the entire watch. You will note that the balance wheel has to be removed first as it has magnets on it. So I was urging a caution of not to demagnetize the completely assembled watch. Then some electric watches have additional magnets other than on the balance wheel itself. Another reason to be cautious with electric watches.

 

[Nucejoe]

2 hours ago, AndyGSi said:

Have you seen the link above with the ESA 9150 Service Manual?

Oops , had missed it. 

Thanks for informing me. 

 

[AndyGSi]

41 minutes ago, Nucejoe said:

Oops , had missed it. 

Thanks for informing me. 

 

There a little mote here on the 9154 Circuit.

9154 Circuit.pdf

[edrelich]

On 3/26/2025 at 3:27 PM, AndyGSi said:

Have you seen the link above with the ESA 9150 Service Manual?

I have but if I need a manual for the repair, it’s better that a watchmaker handles it. 

[edrelich]

On 3/26/2025 at 5:25 PM, JohnR725 said:

 

typically when people use a demagnetizer they like to do the entire watch. You will note that the balance wheel has to be removed first as it has magnets on it. So I was urging a caution of not to demagnetize the completely assembled watch. Then some electric watches have additional magnets other than on the balance wheel itself. Another reason to be cautious with electric watches.

 

 

On 3/26/2025 at 5:17 PM, GuyMontag said:

I realized the OP had a 9150, the stop lever being underneath and not on top of the setting lever jumps out at you. The servicing is more or less the same though.

So what you’re saying is I can send this to you and you’ll fix it for me?

[GuyMontag]

1 hour ago, edrelich said:

 

So what you’re saying is I can send this to you and you’ll fix it for me?

Ha, you don't want me working on  your watch, I'm just a hobbyist Also, my 'To Be Serviced' pile is so big I wouldn't be able to get to it for a long time...

 

[rehajm]

57 minutes ago, GuyMontag said:

Also, my 'To Be Serviced' pile is so big I wouldn't be able to get to it for a long time...

..that makes me feel realtively sane...

Edited March 28 by rehajm