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I bought new batteries and my instax still don’t work, i’m worried if its beacause of the leakage and corroded battery contacts

@suga1234 , Hopa, Yes if battery contacts corroded, they should be cleaned to make a good connection. A pens ink eraser has a little grit in it and works well for cleaning corroded terminals also soft cloth or Qtip dampened with 90%+ Isopropyl Alcohol can work. Have patience clean all terminals, blow/shake any debri out of battery compartment, install new good quality batteries correctly and try. Link below to trouble shooting. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. Fujifilm Instax Mini 8 Troubleshooting