[Hallicrafters] SX-100 MK 2 - Wierd S-meter

[k7mks at comcast.net]

With no antenna connected and mode in AM the S-meter will barely set at zero on all bands.  Connect a small antenna and tune to a "no signal" frequency and  the meter will no longer zero.  It seems like it is showing white noise.   Switch mode to CW/SSB and it will not approach zero adjustment.  This may be nor mal as the manual does no t mention the meter works in CW/SSB.  V-4 has been replaced with no improvement 

  

I've heard that the S-meter zero on the SX-100's can be a challenge to accomplish.  True or False? 

  

Thanks for your helpful comments. 

  

Joe k7m ks