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This is a genuine Ronda Caliber 1042 quartz movement circuit block, the core electronic control unit of the movement. The module integrates a quartz oscillator and CMOS integrated circuit, generating a precise 32,768 Hz time base frequency to drive a stepper motor for accurate hour, minute, seconds, and calendar functions. As an original factory replacement part, it quickly repairs movement failures caused by water ingress, battery leakage, or aging electronic components without replacing the entire movement.
Genuine Ronda Part – Swiss factory‑original for Caliber 1042, not a copy.
Integrated Quartz Oscillator – Provides a high‑accuracy 32,768 Hz time base.
Multi‑Function Support – Drives hour, minute, seconds hands and calendar (date/day, depending on version).
Low‑Power CMOS Circuit – Delivers ultra‑long battery life with the appropriate battery.
Cost‑Effective Repair – Replaces only the faulty circuit board, far cheaper than a whole movement.
| Parameter | Details |
|---|---|
| Part Name | Circuit Block / Electronic Module |
| Compatible Movement | Ronda Caliber 1042 quartz (common three‑hand date or day‑date versions) |
| Frequency | 32,768 Hz |
| Battery | Typically 371 / SR920SW or similar; refer to movement manual |
| Function | Generates stepping motor pulses for hour, minute, seconds, and calendar |
| Origin | Switzerland |
| Condition | Brand new, genuine |
Ronda Caliber 1042 quartz movement (common in mid‑range Swiss and Asian brand watches, e.g., some Tissot, Certina, Swatch models).
Repair of non‑running movements, inaccurate timekeeping, abnormal calendar function, or no response after battery replacement.
Particularly suitable for failures caused by water ingress, battery leakage corroding the PCB, or aged electronic components.
Professional watch workshops, brand service centers.
1. Is this a genuine Ronda circuit board?
Yes. It is a Swiss factory‑original part for Caliber 1042, not a copy.
2. How can I tell if the circuit block needs replacement?
Symptoms: the movement does not run with a fresh battery; no pulse output detected on a timing machine; calendar does not advance (non‑mechanical fault); visible corrosion on the PCB due to moisture or battery leakage.
3. What should I pay attention to during installation?
Disconnect the battery first. Align the circuit block with the locating pins and contact pads, ensuring good contact between the metal springs and coil leads. Use non‑magnetic tweezers and anti‑static precautions. Professional installation is recommended.
4. Does the new circuit need calibration after installation?
No. Timekeeping accuracy is determined by the quartz crystal. New factory circuits are pre‑calibrated to standard accuracy. A timing machine check is optional but recommended.
5. Is this module compatible with all Ronda 1042 variants (no date, date, day‑date)?
The Ronda 1042 family typically uses the same circuit board; different calendar functions are mechanical. The module only provides the stepping pulses. Thus, the circuit is universal. However, verify the original PCB shape and contact layout.
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