is it worth fixing SERVIS M7665FF?

Can anyone help? I have a SERVIS fridge freezer model no M7665FF, its approx 6 years old. It was working perfect until all the lights on the front started to flash; the power on, the low temp warning and the fast freeze. I've had to take everything out of the freezer as items were beginning to defrost (lucky i have a chest freezer). I think its the control panel thats causing the problem but not sure, does anyone know if this is expensive to fix or am i better buying a new one?