DX 55V
Notice on the bottom side of the main board towards the front there is a jumper wire soldered to the board.  One end of the wire is soldered to ground and the other end is soldered across two pins.  Remove this wire and at the same time make sure that the two pins are no longer shorted together.
VR1  RX meter
VR4  Squelch
VR5  FM deviation
VR8  TX meter
VR12  Low power AM modulation
VR13  High power
VR14  High power AM modulation
VR16  Low power
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