SB-888 TS-430S Intermittent PLL Unlock in FM/AM 10-17-84 Some owners of the TS-430S have reported intermittent loss of transmit and Receive when operating in the FM or AM modes, along with a loss of the digital display. The cause of this may be due to a loss of the FM/AM Heterodyne Oscillator signal. Replacing the components listed below will correct most instances of this failure. Procedure: ON the Control Unit (X53-1290-XX) change R131 to a 22 K ohm 1/4 watt carbon resistor, and change C144 to a 3 pF 25v Disc ceramic capacitor. Time required for this modification is 30 minutes. No realignment is required. CLM (c) 121589TKC