Do you have a Head, Body, Surface Coil or Multicoil Problem ?

Description of the RF Chain: [Graphic]                                                                            [Definitions]
The RF signal path has two separate functions: The Transmit side and the Receive Side. The Transmit side of the RF system, begins at the (U)CERD, specifically the Exciter module. It delivers a controlled drive signal to the class A/B amplifier sections that simply amplify the small signal to a high power pulsed signal,  which is then delivered to the RF Coil of choice.
The Receive side is simple but has its complexities as well. When the transmit signal stops, The RF Coil we used for transmit is momentarily  used as a receive antenna. It captures the signal from the bore and is sent through a combiner and a signal preamp, then back to the Receiver side of the (U)CERD. 
Troubleshooting: Where to start?
 I recommend you start your troubleshooting, on the Transmit side first, then move to the Receive side. The Transmit or "High Power" side of the RF system experiences more stress due to high power loads. If you are unsure of where you should begin  use the Step-By-Step guide below.