壊れたテスターを修理 AstroAI 6000カウント

Summary

In this engaging video, the host delves into the world of electrical testing, starting with their frustrations with a malfunctioning tester, which predominantly fails in resistance measurements. After enduring erratic readings and multiple battery replacements, they decide to dissect the faulty device for a closer look. They also compare it with a newly purchased model, highlighting slight changes in design and specifications. Through a detailed teardown, cleaning, and reassembly process, they explore potential causes for the device's erratic behavior, ultimately improving its performance with simple maintenance. This hands-on troubleshooting guide not only showcases the importance of regular equipment care but also provides valuable insights into the inner workings of electrical testers.

Takeaways

• 💻 The presenter is discussing the performance issues with a previously purchased tester, which had been malfunctioning and showing erratic resistance measurements.
• 🔋 A new tester model, DM6000AR, was purchased to replace the malfunctioning one, highlighting a possible model change from the old WH5000A model.
• 🛠️ The video includes a teardown of the old tester to diagnose and potentially fix the issues, indicating a hands-on troubleshooting approach.
• 👨‍🔧 The presenter has used the old tester for over four and a half years, suggesting a decent lifespan for such a device considering its price point.
• 🔧 Differences between the old and new tester models are noted, including changes in color codes for resistance measurement and an increase in current measurement capability.
• 📱 The new tester comes with a clearer LCD and improved test leads, suggesting enhancements in usability and accuracy.
• 🔨 Maintenance, such as cleaning and replacing grease, was performed on the old tester, showcasing the importance of regular upkeep for electronic tools.
• 🔌 The presenter successfully repairs the old tester by cleaning its contact points, thereby restoring its functionality without needing to replace internal components.
• 🌐 The video also touches on the importance of choosing the right tester for DIY projects, comparing features and prices of different models available on the market.
• 📚 The presenter mentions a 3-year warranty for the new tester and suggests that the old tester's issues were mainly due to wear and lack of maintenance, not a fundamental flaw in design.

Q & A

What was the issue with the tester?

The tester was giving inconsistent and inaccurate resistance readings. The resistance values would fluctuate and change erratically.

How long had the tester been used?

The tester had been used for 4 and a half years.

What was tried initially to fix the tester?

The batteries were replaced multiple times, about 5 times, in an attempt to fix the inconsistent readings.

What was the hypothesis for the cause of the issue?

The speculated cause was either a bad capacitor or dirty/worn contacts.

What was done to try and fix the tester?

The case was opened, the contacts were cleaned, contact lubricant was re-applied, and its operation was tested.

What was the actual cause of the issue?

Dirty/worn contacts were the cause. Cleaning the contacts and re-lubricating fixed the inconsistent readings.

What model tester was purchased to repair the old one?

A DM6000AR model tester was purchased, very similar to the original WH5000A model.

What were the key steps in disassembling the tester?

Removing screws, prying apart the case, disconnecting wire connectors, removing the display, circuit boards, etc.

What lubricant was used on the contacts?

Contact lubricant grease was used after cleaning the contacts.

What was done to quiet the tester?

Acoustic foam was added to dampen the beeping noise.