How can I fix this quartz watch without having to buy a new movement?

[GregG]

My father in law asked me to look at his watch which uses a Harley Ronda HQ515.24H movement.

https://www.esslinger.com/harley-ronda-quartz-watch-movement-hq515-24h-24-hour-date-at-3-00-overall-height-4-8mm/

 

Starting with the simplest thing, I assumed the battery was dead.  I didn't have a spare 371 battery so I used my bench power supply.  I touched the positive lead to the top plate that makes contact with the positive side of the battery, and the negative lead to the plate on the bottom of the battery compartment, and the watch started to tick.  I ordered a replacement battery, and put it in, but the watch doesn't tick.  What else might be going wrong that is stopping it from working?

Edited May 14, 2021 by GregG

[JohnR725]

28 minutes ago, GregG said:

I assumed the battery was dead.

When working on electrical stuff assuming is not a good word indeed test equipment. Like a digital volt meter was the battery good or bad? A good battery indicates a watch problem a bad battery indicates it's probably the battery but not 100%.

Then just to clarify your telling us it works fine with your power supply but does not work with the battery?

I'm assuming you did test the voltage of the new battery to make sure it actually is a new battery? Then there's an insulator under the battery is that still there?

Then I be helpful to give us pictures so we can see the watch and see if we see a problem.

Then I've attached the technical documentation just in case you didn't have

 

Datasheet_515_24H_Complete_technical_documentation.pdf

[GregG]

Ahhhh, interesting, I don't have part # 3603.034.  I'm assuming 3601.078 is what's supposed to actually make contact with the negative side of the battery?

I've verified that the old battery is dead, and the new battery is good.  And yes you are correct it works with the power supply, but not with the battery.

Edited May 14, 2021 by GregG

[JohnR725]

Yes the pictures shows your definitely missing the insulator. Without that in place as soon as you put the battery in it short salad and the watch definitely will not run. They need a thin piece of plastic to put under their otherwise it's a new movement. As I don't know what it would cost to buy a new insulator although sometimes you by those in assortments. But as soon as you have to put any money into parts it's cheaper just to buy the movement.

[GregG]

Thanks. Would it be possible to just stick a piece of electrical tape under the gold contact finger and on top of the base plate?

[HectorLooi]

Yes you could. Kapton tape would even be better. 

If it still doesn't work, check the current consumption of the movement. It might be so gummed up that the battery cannot supply enough current move the wheels.

In that case, you'll have to clean and lubricate the movement. 

[Marc]

9 hours ago, JohnR725 said:

battery in it short salad

It definitely won't run if the battery is short of salad!!!!!! 

<My apologies @JohnR725 I couldn't resist>

[KOwatch]

It's probably fine but I wouldn't use electrical tape, with age the adhesive leaves a mess. For this situation I've just cut out a small disc of thin plastic, like from a thicker bag, or those clear plastic clamshell packages that everything comes in these days.

 

 

[KennethLee]

To help with cutting a round disc for insulation, use the battery as a template.  Hold the battery against the plastic and cut around it.