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Re: A Mysterious G 5400 B Problem



Hi Roy and Bob.... That is EXACTLY what I had to do also!! Cliff K7RR

On Tue, 23 Jun 1998, Roy Welch wrote:

> In connection with this, the meters connect to the control box circuit
> board by the meter threaded terminals protruding through the board and are
> held tight with the nuts on the meters.  I have had the circuit board
> "pads" under these nuts get tarnished and indicate an intermittent
> condition when it was only an intermittent connection to the meter.
> 
> Loosen these nuts and retighten them.  It cured the problem here.  If you
> can, you might brighten up the circuit board "pads" beneath these nuts.
> 
> Bob Bruninga wrote:
> > 
> > My Yeasu G-5600B has been intermittant for years.  Seems that if I turn
> > power off/on again, that then the meters usually read correctly.  I
> > attributed this to intermittant contact on the pot that becomes conducting
> > again on a transient.  BUT what if it was just mechanical sticking in the
> > METER?  Then a power up swing of the needle from 0 would move past any
> > sticky point in the needle bearing due to momentum.  Whereas with a very
> > slow change, it sticks?.  Next time, instead of cycling power, I am going
> > to bang on the meter...  and see if that is it..
> > 
> > wb4apr
> 
> -- 
> 73, Roy
> 
> Internet: w0sl@amsat.org
> Home Page: http://home.swbell.net/rdwelch
> 




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