How can I fix my Beko DCU8238 Condenser Tumble Dryer?

My dryer wasn't heating up so I called in the repair man who diagnosed a faulty PCB Control Module. I agreed to the repair but he has let me down. In desperation I have ordered a replacement board and have just replaced it myself. When I went to turn it on, all the lights on the control panel flash on and off constantly. I have tried holding down the power button for 10secs but to no avail. Have you any suggestions what else I can try? The dryer is just over 2 years old!