[sobell1980]

Lawrence, you have been golden, thanks for the maths lesson. I knew of ohms law regarding volts amps and resistance but not power and not how to derive the power from only being given amps and resistance. Thanks Chris for the triangles I will jot down in my radio repair note book. I will go do my maths and see what I need. Lawrence, thankyou for the mentoring and patience with me. I like to know how things work and how to solve these problems for myself. Not to be just given answers so I can have a deeper understanding with each set I repair. I do have a radio repair book with lots of math that some I understand and then it goes way off on a tangent for me. I don't want to become a circuit designer but it's important to grasp and understand the basics and what each resistor/ component is for and what function it serves. Otherwise diagnosis would be guess work. Many thanks for everyones replies.
Dave.