Error 311 on Tajima c1201

Hi to all,

I had some issues with my good old Tajima this week.
First the control panel wouldnt light up, so my husband took out the borad from teh hmachine and he noticed a condenser i think thats what its called, was broken and was like leaking liquid, so he took it it to na IT technician which placed a new one same voltage.
Great, we come back and install it.
As I program the machine, I start the embroidery and first error 225 started ( which I was surprised) and then error 311.
Its not the belt and everything looks ok so anyone out there managed to fix this error ?

Hoping thsi happened to someone else and they manged to fix this error by themselves.

Carmen