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ETA QUARTZ OPERATION

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Stevelp Watch Enthusiast

Stevelp

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Hello all.  I'm working with an ETA 963.116 quartz movement.  The movement original to the watch was not working so I changed the battery and still no luck.  I used the Horotec turbo to possibly free up some old oil or dirt that might be in the gear train but still no luck.  The train was free and the hand did move when the tester was activated.  So I sourced what was said to be an NOS movement, but when I installed the battery, the gear train pulses but only advances every now and then.  I decided to disassemble the movement and clean it being it was quite old and hadn't run in quite some time.  After re assembly the same is happening, pulsing but the wheels don't advance.  I removed the rotor to check the gear train and it spins nice and free.  I then installed just the rotor and watched its operation.  This is where I'm not so sure what is normal.  The rotor pulses every second and rotates 180 degrees.  Is 180 normal or should it be 360?  As soon as I add the next wheel its back to pulsing and does not rotate the wheel.  Any advice would be appreciated.

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JohnR725 Distinguished Member

JohnR725

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17 hours ago, Stevelp said:

clean it

What would be her definition of cleaning and did you lubricate it?

17 hours ago, Stevelp said:

NOS movement

The problem with the new old stock movement is this is a really old movements. Approximately 43 years old to be as a guess based on the tech sheet.

17 hours ago, Stevelp said:

Is 180 normal or should it be 360?  As soon as I add the next wheel its back to pulsing and does not rotate the wheel. 

It's supposed to rotate 180°. Then it definitely should rotate the next wheel that can't rotate that it can't rotate the rest of the watch.

One of the problems with electric watches is there's integrated circuit and  electronic things like a coil it be nice to test things with test equipment.

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Stevelp Watch Enthusiast

Stevelp

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Thanks everyone for the responses!  As far as cleaning, I have an L&R varimatic that I use with the appropriate L&R fluids for cleaning watches.  I lubricated the pivots with Moebius 9010, being careful not to overdue it as I have read quartz watches can be fussy with to much oil.  The rotor was cleaned with rodico and not put through the cleaner.  I appreciate the link for the tech sheet watchweasol.  Can those rest points be checked with a standard multimeter?  I don’t have any quartz testing equipment (though after this I might think about it.)

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AndyGSi Distinguished Member

AndyGSi

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3 hours ago, Stevelp said:

Can those rest points be checked with a standard multimeter?  I don’t have any quartz testing equipment (though after this I might think about it.)

Yes the voltages can be tested with a multimeter but if the rotor pulses I would expect the fault to be mechanical.

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