430 F430 Instruments Cluster displays flickering

Hello everyone, I'm facing problems with a Ferrari F430 2010 instruments cluster where all the displays are flickering most of the times and stops doing so for a short period. The milage digits are flickering and the dots between the milage numbers are turning on and off continuously one after the other. All other displays in the instruments cluster are also flickering. I tested the charging system and nothing appeared to be wrong. The earthing wires of the dash board are having almost 0.4 Ohm impedance with the ground so no ground connection problems are present. Being an electronic engineer I'm willing to dismantle the instruments cluster circuit board and try to look after faulty components.
Any idea about what may cause this problem to happen?
Thank you in advance...

Fred