I have now used a lot of hours trying, to find out why my Left pop bumber is stuck on, I have changed the transistor on Q9 and the pre resistor, and both R123 and the other one, and the Controller chip 7402n. And it still stuck on when Power up. If i change cable With the upper pop bumper the coil, it Works fine, so the problem lies on the Board and not on PF or cables. and of course if i put the upper pop bump cable on the left pop bumper pin , then that one aslo stuck on. so there has to be a problem on the left bumper uot pin, i have tested all the transistor and they are good, so i dont know what will be the next, is it before the 7402N chip ? I did some testing With the multimeter and found out that the value out on the pin from 7402N chip was much higer than to the rest of the pre transitors. but dont know if that is a problem.