[SEDXC] LogiKey Help

[K4PI]

Hi Rich, Idiom Press is still in business and possibly they could give 
you a clue.  I found the manual and schematic  Do a Google search as    
idiomp press k3 keyer schematic    A PDF location should come up and 
there is a large manual and schematic.  73 Mike K4PI

On 2/12/2019 9:51 PM, Rich Arland wrote:
> I have a LogiKey model K-3 (Idiom Press) that has a rather annoying problem. The internally generated sidetone suddenly changed pitch and is now an irritating very high pitched tone. Other than that the K-3 works great. Anyone have one of these that has had a similar problem?
>
> I don't have a schematic or the manual (such as it was) so I'm kinda in the dark here. There are only a couple of through=hole parts the rest are SMD.
>
> Help!
>
> Vy 73 es gud DX!
>
> Rich Arland   K7SZ   WPE7BYR
> Radio/electronics archaeologist
> Author: The ARRL's Low Power Communications
> Bent Dipole Ranch, Dacula, GA
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