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nicholsjamesAug 21, 2025
How to fix a Schumacher SCI90 when the connected LED is not on?
- DDavid GeorgeAug 21, 2025
If the CONNECTED LED is not on, it may be because the battery is not connected correctly, the battery voltage is at zero volts, the input fuse is bad, or the output breaker is bad. Check for proper connection to the battery. Turn off everything in the car and try to connect again. Replace the fuse (5 Amp fuse). Push button to reset the breaker.