Duane Degn
First Officer
Flight distance : 622234 ft
United States
Offline
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It sure sounds like this is a hardware issue and fixing it will require work on the PCB.
I'll write a way to diagnose the problem more precisely but taking apart the S1 will likely void your warranty.
The LEDs on the S1 are small surface mount squares which contain all three LEDs in one component. The three colors share a common anode and each color uses a separate cathode. The red's cathode is pin #1 of the chip. One of the four corners of the LED chip is shaped different than the other three corners to indicate where pin #1 is located. The anode is on the opposite pin from pin #1 (pin #4).
If you use a multimeter in diode testing mode, you could check to see if the red element is good in the LED. You'd touch the black probe of the multimeter to the cathode and the red probe of the multimeter to the anode pin. A multimeter in diode testing mode should provide enough current to light the red LED. You can test a known working LED to insure your multimeter is setup correctly.
If the red element works, then the problem may be a bad solder joint in the circuit. If the red element is dead, you'll need to replace the LED. I don't think it would be hard to find a LED the right size with compatible pin locations but I'm not sure if the LED's colors would match the original colors well. |
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