In this video, we unbox, compare, and deeply test the FNIRSI LCR-ST2 Smart Tweezer LCR/ESR Meter — a compact yet powerful 3-in-1 tester designed for electronics hobbyists, DIY projects, repair technicians, institutes, and industry use.
From Kelvin probe measurements to sorting components, firmware upgrades, and handling tiny 0402 SMDs, this video covers everything you need to know before buying.
🔍 What’s Covered in This Video
✅ Unboxing & first impressions
✅ Comparison with FNIRSI ST1
✅ Design, layout & build quality
✅ Kelvin probe usage & tip replacement
✅ Power-on, UI & interface walkthrough
✅ Firmware upgrade process
✅ LCR measurements & waveform view
✅ Accuracy testing with reference components
✅ Voltage, continuity & diode testing
✅ Smart scan & sorting mode
✅ Handling very small SMD components
✅ Final verdict – who should buy it?
⚙️ FNIRSI LCR-ST2 Key Specifications
🔹 Measurement Functions: L, C, R, ESR, Diode, Continuity, Voltage
🔹 Test Frequencies: 100 Hz / 1 kHz / 10 kHz / 100 kHz
🔹 Voltage Measurement: up to ±30 V DC
🔹 Measurement Method: True Kelvin (4-wire)
🔹 Display: High-resolution color screen with auto-rotation
🔹 Smart Features: Auto recognition, scan mode, sorting mode
🔹 Firmware: User-upgradable
🔹 Power: USB-C rechargeable battery
🔹 Form Factor: Compact tweezer + probe hybrid
🔹 Best For: Repair labs, production testing, DIY, institutes
🔗 Purchase Links
🛒 Official FNIRSI Store:
👉 https://www.fnirsi.com/products/lcr-st2?sca_ref=10260287
(Using this link helps support the channel 🙏)
🏁 Final Thoughts
Whether you’re repairing PCBs, sorting components for production, or working with tiny SMDs, the FNIRSI LCR-ST2 offers speed, accuracy, and convenience in a compact form factor — making it a solid choice for professionals and enthusiasts alike.
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📌 Hashtags
#FNIRSI #LCRMeter #ESRTester #TweezerLCR #ElectronicsTools #DIYElectronics #RepairTools #PCBRepair #SMDTesting #Engineering
🎥 Recording Gear
📷 Camera: Sony Alpha A6600 & Sony ZV-E10
🎤 Audio: Rode VideoMic Pro+ / Zoom H5 (SSH-6)
💻 Editing: VEGAS Pro 365
🖥️ Laptop: ZenBook Pro Duo
🎥 Tripod: Harison Bahubali
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🕒 Chapters (YouTube Timestamps)
00:01:02 – 📦 Unboxing
00:01:51 – 🔁 Comparison with ST1
00:02:24 – 🎨 Look & Design
00:04:07 – 🧪 Kelvin Probe Basics
00:04:47 – 🔧 Tip Replacement
00:06:23 – 🔌 Turn ON & Interface
00:11:53 – ⬆️ Firmware Upgrade
00:13:16 – 📐 Measuring LCR
00:15:38 – 🎯 Accuracy Testing
00:18:05 – 🧪 Measuring using Kelvin Probes
00:24:36 – 📊 Measurement Waveform
00:26:07 – ⚡ Measuring Voltages
00:28:12 – 🗂️ Sorting Components
00:30:14 – 🔔 Continuity Test
00:31:04 – 🤏 Grabbing Tiny SMDs
00:31:31 – ✅ Conclusions & Verdict
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