[Kenwood] Re: 940S intermittant problem

[Steve London]

Doug Hansel wrote:
> I'm wondering if any 940S owners have experienced this and can lead me in the
> right direction as to what may be the problem
> 
> The freq. display on my 940 goes blank, just dots at the bottom, and the
> receiver goes dead.  When I move the dial, the frequency display comes back
> momentarily, then goes blank again.  The receiver stays dead the whole time.
> Also, transmit is dead.  PRessing the reset switch behind the subdial, does
> not help.

PLL unlock. One (or more) or of the PLL's is probably at the edge of its lock 
range or is intermittant. All of the PLL lock signals are AND'ed at a single IC 
, and if any one of them is unlocked, you get the PLL unlock/dots-at-the-bottom 
indication. Without getting in there with the service manual, it's impossible to 
tell which PLL is the problem. With a service manual and VOM, it's pretty easy 
to find out which PLL is the problem, and to align that PLL.

73,
Steve, N2IC