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Fonix FP35 hearing aid test box
The display on my FP35 looks strange, very dark, and I cannot see the curves, any suggestions?
Yes!
On the back of your FP35 you will find a small black knob. This is the contrast control for the screen display, try ajusting it and I am sure your screen will re-appear.
It is not difficult to move the control by mistake when taking the FP35 in or out of the case - and of course little fingers love twiddling things! Another possibility is that LCD screens can be affected by temperature changes - so if you have been storing your FP35 in the car, in sun or snow, the temperature extreme can require a screen contrast adjustment.
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