Thanks a ton. We have ~20 units in our facility and experiencing the same issue. I feel like writing a preventive action to ERSA. I've followed your steps, bought the LEDs and found some 120ohm (0603) resistors laying around. You are pretty accurate on the time. It's about 20mins after you get the first couple done. The results are night and day (pun intended...lol). I do like the irons and they work great, but just one drawback is the display design. Huge cost savings to do them yourself, but you need to have a light hand, and don't burn anything. I used 3 layer paper under the circuit, exacto blade and tweezers to peel the tape back. The recommended LED part number (LTW-108xxx) works great. Thanks for this awesome money saver, our employees are happy they can see the display again. You Rock!
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