Google brought up this elecraft doc, which shows the two synths, old and new. https://ftp.elecraft.com/K3S/Manuals%20Downloads/KSYN3A%20FAQ-ver-D.pdf Don't bother if you don't have the new synth. The

I was told that the unit I bought has the new synthesizer inside but have not opened to confirm this yet, Is there anything that I can do on the K3 to confirm that it is fitted? James MD0MDI www.md0md

I have had that exact problem twice since I got my K3 in 2007. IIRC the shift/low/norm encoder push button was the problem. I actually got encoders from Elecraft, but found that by working the encoder

No, but I believe those encoders are available from places like Mouser. As to actually replacing them, I have assembled two K3's and in the process I didn't see any encoders that couldn't be replaced

I've replaced the encoders on a couple of K3s. It's not too bad. Here a blog post I wrote up after replacing mine and an update after replacing a friends. https://n5na.net/wp/replacing-elecraft-k3-pus

I’ve replaced them on my KX3, wasn’t too bad. The K3 would be just a bit harder to get to them on the front panel. If you are experienced replacing soldered parts, take your time, you should be okay.

Elecraft got back to me on my problem with the K3. It is something they have seen before, the four encoders just left of the main vfo need to be replaced. It would be 3-4 months before they would even

James Before I had to replace my K3IO board I used a USB to serial converter to connect the K3 to the computer. Converters are readily available and inexpensive. The replacement K3IOb had a USB port.

I suggest setting the TUNE power to 25 watts or so and allowing the KAT500 to do its routine to resolve a match. This will reduce the value of the CMC which can be seen by and confuse the KAT500. With

Install any number of serial port cards, cables to a serial port that may be located on the motherboard, use a USB to serial device or use a "docking station" with serial port(s). The point is that VS

Me as well kept the old as backups just in case. I have two. There are a lot of spare parts around in the shacks they just have to be found. Like I have one of my K3's for sale but no takers. I guess

It won't even go to the reset, holding the shift lo in while powering on.....nothing. Tex ka5y

Power off. Lid off. Gently poke with a finger or plastic instrument. Ensure that all internal connectors are in place. Try re-seating the front panel connector, maybe use some De-Oxit. Hopefully you m

Tex, I believe that this can happen if the K3 sees PTT active when it turns on. Try disconnecting all cables other than the power and coax and try again. Gordon - N1MGO

I haven't used my K3 in a about a year. Fired it up the other day and it's locked up. Won't change bands, most of the buttons only beep, some will do something but not what they are labeled. Tried rel

We've come full circle. See post #37122 DO NOT use a Prolific device.

usb to serial adapter. https://smile.amazon.com/s?k=usb+to+serial+adapter&crid=1QLMFSM7O7ND1&sprefix=usb+to+serial%2Caps%2C455&ref=nb_sb_ss_retrain-deeppltr_1_13 Amazon.com: usb to serial adapter Amaz

Indeed so, and I have kept the pair I swapped out complete with anti microphony ally slabs just in case of a failure. Regards, Mike VP8NO

The old synthesizer is not the end of the day, at least not for me. How many years was that the only one available? 73 Mike R 7! Absolutely Awesome

What do you do if the computer has no serial port?