[Elecraft] K3 synth / PLL faulty

[Victor Rosenthal]

The first thing to do when anything seems weird about the synths is to
check all of those little cables. Make they are all well-seated, and
push the connectors in and out a few times to clean off any corrosion.

73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/

On 31/01/2021 13:49, Graham Kimbell wrote:
> My K3 (old synths, ser1198) has for a few weeks had an intermittent
fault where the main rx synth loses lock. It seems ok when first
switched on but once warm (after maybe 30-60mins) the rx can die.  It
may seem ok but tuning around causes either complete failure or
intermittent failure on certain frequencies.
> 
> Attempts at recalibrating the synth using VCO MD results in an 
> error,
typically ERR VCO 005.  If the fault is intermittent and I tap DISP to
view PLL volts, and then tune around the volts will be ok and then drop
to zero on frequencies where the synth dies.
> 
> I emailed elecraft support about this on 21 Jan but no response. I
raised a query on the tech support page on 25 Jan, no response yet.  It
looks like neither old synths nor new synths are available.
> 
> I'm about to pull the rig apart but has anyone any advice before I 
> do
that. Thanks in advance
> 
> Graham