there was aproblem with my EzyBox. It was loosing signal (going up and down), didn't start correctly every time, was missing channels.
Problem is same as basicly allmost all digital receivers: PSU (PowerSupplyUnit) was going down, because certain capasitors are too old.
I simply replaced all 470uF and 1000uF capasitors with new ones (also higher voltage ratio).
After fixing, everything seems to bee OK now. Booting was much quicker than before, all channels found without problem.
WARNING: Allways disconnect AC-mains plug before opening device. Dont try to do anything if You don't have expiriense and proper tools for this. YOU DO IT AT YOUR OWN RISK.