Soniline g50- issue with multipled picture from the probe

Good morning, This time we have issue with Sonoline g50, The problem we hawe is, machine shows multipled picture, vertical cut pictures, i mean exatly when u put probe(for example) on finger we should see only one bone, on monitor apperas 3 or 4 pieces. Does anyone hawe similar problem with this machine ? Maybe anyone knows wich board can be fault ? Count on u guys ;)