Bad printing

Hello guys!

I have two prusa i3

the first one i have perfect printings, on the second one i've been trying for one silgle print but with no success, for the past six months!!!

i have the same firmware, same configs on both

in my old one i can print on almost temperature with good results

i've tried several firmwares but still no luck

i need some help please i'm desperate!!!

thanks in advance

best regards