[Elecraft] KSYN3A mod problem

[Don Wilhelm]

Nick,

I don't think it is related to the synthesizer, but go through the other 
things you did (cleaning the Front Panel connector and some other 
boards) - you should unplug those, and depending on how you "cleaned" 
the connectors, wipe them carefully and reassemble.
Work on each connector one at a time and test again after each one.

73,
Don W3FPR

On 9/7/2015 2:41 PM, Nick Lelyak wrote:
> Hi,
> have replaced old synthesizer in my K3 for new KSYN3A and have problem with
> this modification.
> Changing frequency by VFO A or VFO B several kHz up or down switches mode
> to reverse
> (CW to CWR, USB to LSB), frequency on display jumps 1 mHz lower ( ex.
> 14015.00 > 13015.00,
> 1830.00 > 0830.00 etc.) and band pass filters relay click can be heard at
> the same moment.
> After switching 1 mHz lower rotating VFO A frequency changes as it should,
> nothing clicking, mode is not reversing but radio is far away from amateur
> band.
> After keeping radio an hour or so on and warming it up problem disappears.
> K3 has no sub receiver installed. Firmware 5.33
> Front panel connector and some other on boards around synthesizer were
> cleaned.
> When I put original synthesizer back problem didn't disappear and was
> exactly same as with new unit.
> I would appreciate any ideas to locate and fix this problem.
> Thank you in advance
>
>