Hi
Have you done this ?
JMP-2 which is placed near the back of the RRC next to the RESET button. JMP-2
is used to select if the DC-power to the front panels should be 8 or 9 V. With the strap in
place it will be 8V, which fits all ICOM radios. Without the strap the voltage will be 9V, which
fits Kenwood TS-480 and RC-2000 panels that need 9V for the back-lighter.
also check that your power supply can deliver enough power
73 de mike