First of all, let me genuflect infront of P Rajan Sir, who is my role model in the field of restoration of vintage radios. I am a beginner in this field who has started restoring my own valve radio, 1964 Calcutta Philips B6CA37A. It stopped working around one year back, when I was out of station for a few months. Now I have got 15RB697 from my brother, who purchased the same recently only. It was working when he purchased it and later refused to work. When I searched the schematics of my own radio, I got the one published by P Rajan sir, with his scribbling in the margin etc. I am not an electronic expert ( Literature is what I studied in college) and when I started restoring my radio I was being slipped in the trap and even without my knowledge I became a crazy man in the subject. I am studying only. It seems very interesting..Pray for the help and blessing of the stalwarts here. My name is Vijayan from Thrissur Kerala.