🔧 𝐏𝐢𝐧𝐛𝐚𝐥𝐥 𝐓𝐞𝐜𝐡 𝐕𝐢𝐝𝐞𝐨 🔧 Stern opto boards all seem to share the same issue. When they were made, the LED was flush-cut to the PCB, which often leads to weak solder joints. In high-vibration areas, this causes failures—and in some cases, the LED can even fall right out of the board 😬 For long-term reliability, replacement is the fix. This affects both the transmitter and receiver, though the transmitter tends to fail more often in my experience. You can buy and replace the entir