KR 9400 strngth meter stuck right

There's an opamp (an RC4558) that drives the meter from the Push Switch B board. It may be bad.
 
kr 9400

Thanks for the replys, yes receiver is operating well, thanks. I do have one of those 4558 op amps will locate on that board and replace. Thanks Pete and Glen
 
As a note, the signal to the opamp passes through the 'Deviation/Signal' switch. I'd expect that a flaky switch might mean a low or non-existent reading, but I'd be shooting the switch with DeOxit in any case.
 
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