How to Troubleshoot and Fix a Canon AutoZoon 814 Electronic Light Meter That Isn’t Working

This movie camera, released in March 1967, has seen its fair share of advancements in the world of photography and videography. While there are now many better, newer, and often less expensive options available, some enthusiasts and collectors may still wish to keep and repair such vintage equipment. If your Canon AutoZoon 814 electronic light meter is not functioning as it should, read on to discover how to troubleshoot and potentially fix the issue.

Understanding the Canon AutoZoon 814

The Canon AutoZoon 814 is a classic from the early 1960s. It was designed for 8mm movie films and offered an electronic light meter to help with metering and exposure settings. Although a fascinating piece of historical equipment, many parts of these cameras, especially those from over 50 years ago, have surpassed their expected lifespans. This can lead to inevitable issues that even the most skilled tinkerers might struggle to fix.

Signs Your Canon AutoZoon 814 Light Meter is Failing

There are several signs that your Canon AutoZoon 814’s electronic light meter may be malfunctioning. You might experience issues such as:

The meter does not display any readings when exposed to light. The meter displays incorrect or inconsistent readings. The meter shows no reaction to changes in lighting conditions. Battery issues, such as insufficient power.

Identifying these symptoms is crucial before attempting any repair. If the meter is not displaying any readings, it could be a power supply or sensor issue. Incorrect readings or inconsistencies may point to problems with the meter’s circuitry.

Troubleshooting Steps for the Canon AutoZoon 814 Light Meter

Here are some steps you can take to troubleshoot the issues with your Canon AutoZoon 814:

Step 1: Check the Power Supply

Ensure that the battery is properly installed and try replacing it with a new one. If the light meter still does not work, check the battery terminal, which may be corroded or loose, and clean or secure it as needed. An ill-fitting battery can lead to insufficient power supply.

Step 2: Inspect the Wiring and Connections

Inspect all the connections inside the camera. Loose or disconnected wiring can cause issues with the light meter’s operation. If you notice any wires that appear damaged, it might be time to replace them.

Step 3: Test with a Known Good Light Meter

If you have access to another Canon AutoZoon 814, swap the light meter components with a functional unit. This can help you determine if the issue lies within the meter itself, the camera body, or other connected components.

Step 4: Perform a Voltage Check

Use a multimeter to check the voltage across the meter’s terminals. If you find that the voltage is outside the expected range, you may need to replace a capacitor or check the meter’s internal circuitry.

Professional Repair and Replacement Options

If, after following these steps, the Canon AutoZoon 814’s light meter still does not work, it may be time to consider professional repair or replacement. Given the age of the camera, there may be a limited number of suppliers or mechanics who specialize in vintage equipment. In such cases, investing in a newer, more reliable digital light meter or camera might be a better option.

Conclusion

The Canon AutoZoon 814 electronic light meter, while a piece of historical significance, presents unique challenges when it comes to repair and maintenance. By following the troubleshooting steps outlined above, you might be able to get your vintage camera working for a while longer. However, if you find the process too daunting or if the cost of repairs is prohibitive, it is often best to opt for a newer, more reliable model that can meet your current needs.