[Kenwood] TS-520

[Kenneth G. Gordon]

The TS-520 has a pair of 6146Bs in the final amp stage. In SOME transceivers, screen 
emission from old, gassy, or overloaded 6146Bs can cause the changeover relay to stick in 
the on condition until that voltage bleeds off.

Athough I doubt that that is an issue here, it might be something to think about.

Ken W7EKB

On 10 Nov 2016 at 16:07, Steve Sutfin wrote:

> First thing that comes to mind is possibly something in the relay  
> circuit. Either the voltage to it or the relay itself might be  
> sticking. Do you have a service manual to check voltages?
> Steve k7dna
> 
> On Nov 10, 2016, at 3:51 PM, James Searcy wrote:
> 
> > My Kenwood TS-520 has recently started doing something it has never  
> > done.
> > When keyed up (either by microphone or key) it will stay keyed up  
> > on its
> > own, when transistion to receive is attempted. Are there any ideas  
> > as to
> > the cause ???   Jim   WA5WRE
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