Hi, pls,can anyone help? I was told my compressor is bust,it will cost a fortune to repair it. the freezer is triping on b16(fuse). Now I wonder if the relay is gone which is cheaper to fix. I wanted to try to wire it to higher fuse! can anyone help,what's the right path to take. many thanks

Yea, I can definitely help.
The fuse is designed to keep the wires in the house and in the fridge from melting, shorting and catching fire. Many laws have been passed which are designed to inhibit people increasing fuse size and burning down the house.
In the event that an electric motor sees a hard life, the insulation on the windings inside will begin to burn due to heat. In the case of your fridge compressor, the oil may also become burnt. In either case, there will be a reduction in the resistance. Either from winding to winding because they are sort of touching each other because the insulation was burnt or from the motor though the oil to the case because the oil has been burnt.
The reduction in electrical resistance will case the motor to request more power, which will, in turn, produce more heat, which will cause a reduction in electrical resistance which will cause the motor to request more power, which will in turn produce more heat... Do you get the picture? It is call thermal runaway.
The law requires fuses and other forms of current protection for the purposes of stopping thermal runaway before your house burns down.
The relay may need replaced. This, however, would be another problem on top of the one you already have. The motor drawing to much juice will cause a relay to go bad. The relay is designed at minimal specs (all engineers trying to save money) to operate the fridge when it is working properly. Along with every other part in the fridge.
The relay going bad is only the beginning of your extra problems in the event that you continue to operate the fridge without fixing the actual cause of your problems.
I usually smile, but in your case, facts must be faced.
:o(.