# Seiko Mod Watch Troubleshooting Guide

**By AdminMy Store** · 2026-10-13

# Seiko Mod Watch Troubleshooting – 25 Common Problems & Quick Fixes

Having trouble with your Seiko Mod watch? Most common issues are easy to resolve. Find your problem below for a quick fix.

## Automatic Movements – NH34 / NH35 / NH38 / NH72 / NH05

### 1\. Watch Not Running After Delivery?

The mainspring may have run out of power during shipping.

**Fix:** For NH34, NH35, NH38 and NH72 movements, unlock the crown if necessary and wind clockwise approximately **55 turns**. For NH05, follow its movement manual.

### 2\. Watch Stops Overnight?

Your watch may have insufficient power reserve.

**Fix:** Fully wind it before wearing. Most standard NH-series movements provide approximately **41 hours of power reserve**; NH05 specifications differ.

### 3\. Watch Stops Even When Worn Daily?

Limited wrist movement may not provide sufficient winding.

**Fix:** Start with a full manual wind. If it continues stopping unexpectedly, have a qualified watchmaker inspect it.

### 4\. Watch Running Too Fast or Too Slow?

Small daily variations are normal for automatic watches.

**Fix:** Wind fully and monitor for several days. Our watchmakers target **±20 seconds/day during workshop testing**. Actual performance may vary.

### 5\. Watch Suddenly Gaining Minutes Per Day?

Magnetisation may be the cause.

**Fix:** A local watchmaker can usually test and demagnetise the movement in just a few minutes. This is a common and straightforward procedure.

### 6\. Watch Makes a Spinning or Rattling Sound?

A light spinning sound from the automatic rotor is normal.

**Fix:** No action is needed unless the sound is unusually loud or accompanied by poor performance.

### 7\. Seconds Hand Stops When Setting Time?

This is the normal **hacking seconds function** on movements that support it.

**Fix:** Push the crown back into its normal position.

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## VK63 Quartz Chronograph

### 8\. Large Seconds Hand Not Moving?

**This is normal!** The large central hand is the stopwatch hand, not the regular seconds hand.

**Fix:** Press the upper button to start it. The small seconds subdial should run continuously.

### 9\. VK63 Watch Completely Stopped?

The battery may be depleted.

**Fix:** A local watchmaker or jeweller can usually replace the battery quickly and inexpensively. Ask them to check the caseback seal afterward.

### 10\. Chronograph Won't Reset to Zero?

**Fix:** Stop the stopwatch using the upper button, then press the lower button to reset.

If it remains misaligned, a qualified watchmaker can inspect the chronograph mechanism.

### 11\. One Small Subdial Doesn't Move?

Each subdial has a different function: running seconds, stopwatch minutes, or 24-hour indication.

**Fix:** This is usually normal. The stopwatch minutes hand only advances during timing.

### 12\. Chronograph Stops After 60 Minutes?

The VK63 chronograph is designed for timing sessions of up to 60 minutes.

**Fix:** Stop and reset the chronograph before starting another session.

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## Miyota 8285 – Day-Date Automatic

### 13\. Miyota 8285 Not Running?

The movement may have run out of power.

**Fix:** With the crown in its normal winding position, turn clockwise approximately **20 times** to start it.

### 14\. How Do I Set the Day and Date?

Pull the crown to the first setting position.

-   **Clockwise:** Adjusts the day.
    
-   **Counterclockwise:** Adjusts the date.
    

Avoid quick calendar adjustments between **9 PM and 1 AM**.

### 15\. Day or Date Not Changing Overnight?

The time may be set to the wrong AM/PM cycle.

**Fix:** Move the hands to a safe daytime position, adjust the calendar, then reset the correct time.

### 16\. Miyota 8285 Stops Overnight?

The watch may not have enough stored power.

**Fix:** Wind manually before wearing. The movement provides approximately **42 hours of power reserve** when fully wound.

### 17\. Miyota 8285 Running Fast or Slow?

Small daily variations are normal.

**Fix:** Fully wind and monitor over several days. A qualified watchmaker can check and regulate the movement if necessary.

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## Date, GMT & Crown

### 18\. Date Changes at Noon Instead of Midnight?

The watch is likely set 12 hours out.

**Fix:** Advance the hands by 12 hours and reset the correct time.

### 19\. Date Doesn't Change Exactly at Midnight?

Mechanical calendars may change slightly before or after midnight.

**Fix:** Small variations are normal. If the timing is significantly incorrect, a watchmaker can inspect the calendar mechanism.

### 20\. Crown Won't Pull Out?

Your watch may have a screw-down crown.

**Fix:** Turn counterclockwise to unlock it, then gently pull outward. Never force it.

### 21\. Crown Won't Screw Back In?

The crown may not be aligned with its threads.

**Fix:** Gently realign and screw clockwise. Stop if you feel resistance.

### 22\. GMT Hand Moves Differently From the Hour Hand?

**Normal operation.** The NH34 GMT hand completes one rotation every 24 hours.

**Fix:** Set it to your desired second time zone using the NH34 manual.

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## Watch Case, Strap & Water Resistance

### 23\. Bezel Only Rotates One Way?

Many dive-style bezels are designed to rotate counterclockwise only.

**Fix:** This is normal. No adjustment is needed.

### 24\. Watch Bracelet Too Large?

Most metal bracelets can be resized by removing links.

**Fix:** Follow our [Watch Strap Adjustment Guide](https://www.seikomod.com.au/blogs/news/how-to-adjust-seiko-mod-straps), or visit a local jeweller for a quick adjustment.

### 25\. Can I Swim or Shower With My Watch?

**No.** Watchbrick watches are conservatively rated at **3 ATM**, suitable for light rain and occasional splashes only.

**Fix:** Avoid swimming, showering, diving, or submerging your watch. If moisture appears inside the crystal, stop using it and arrange a prompt professional inspection.

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## Still Need Help?

Many common watch issues, including **battery replacement, demagnetisation, bracelet adjustment, and basic movement regulation**, can be resolved quickly by a qualified local watchmaker or jeweller.

For suspected manufacturing defects or warranty-related concerns, please contact [**hello@watchbrick.com**](mailto:hello@watchbrick.com) with your order number and a short video before arranging repairs.

Every Watchbrick timepiece is **hand-assembled and quality-checked by our own in-house watchmakers**. Automatic watches also include a **printed movement timing test report**.

**Watchbrick — Hand-Assembled. Individually Tested. Built with Care.**

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> Source: [WATCHBRICK](https://seikomod.com.au/blogs/wb/seiko-mod-watch-troubleshooting-guide)