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Answer to: Headphones can't connect to jackProvided nothing is wrong with the headphones themselves, the headphone jack on the device may need be reseated or replaced. This would involve disassembling the device and checking the headphone jack. We have a guide that you can follow to perform this procedure step-by-step. Be sure to check that the jack is properly seated in the device, otherwise, obtain a new headphone jack to replace the defective one.
Answer to: Front LCD display no longer worksA possible fix could be as simple as turning the unit off and on again. To ensure that the device is fully powered off, remove any batteries from it before turning it back on. If the LCD screen still does not display information, the LCD display has most likely died. Fixing the device would involve a more complicated repair: replacing the LCD display. However, this is possible if you follow our guide on replacing the display.