Please can you help. Our fridge is working intermittently. The repair man could find nothing wrong with it and doubted it was the PCB board. Sometimes it will work for hours and then all of a sudden up comes the error code 12, as happened this morning. Switched everything off left it for 10 minutes, switched back on and appears to be working again but when you open the fridge door all the control panel lights go out as though switched off and the internal light does not work. Also a couple of times when we switch radio on, the fridge goes off. This could just be coincidence. Any suggestions before hubby's beer warms up. Many thanks