Sounds like the LCD is on its way out and the display may need replacing, but it could be a bad connection to the panel although that is less likely. Put a thermometer in the fridge or freezer so you can check all is ok with the settings. If acceptable it might be worth just putting up with it as it is.
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Sounds like the LCD is on its way out and the display may need replacing, but it could be a bad connection to the panel although that is less likely. Put a thermometer in the fridge or freezer so you can check all is ok with the settings. If acceptable it might be worth just putting up with it as it is.