Let us know what you find.   I have a K3S which was sent back to have the DVR firmware updated, not the update we can do, but the one that needs done at the repair center which now shows "dr 02.05".  Even after the repair many times my DVR will not work at all or locks in transmit.   If I check the FW REVS in CONFIG it will show "dr 00.01" or a variety of other numbers, but not "dr 02.05".   If I cycle the power on the radio a time or two it will again show "dr 02.05" and starts working again.

You might want to check what you FW version is when the DVR is not working.

Rich

K3RWN

On 7/22/2021 13:37 PM, Jeff Kinzli N6GQ wrote:
Hey y'all, I have an old K3 that we upgraded to K3S a few years back. It
also has a DVR unit in it. All firmware is current.

Today upon powerup the DVR didn't work - showed as not installed and
obviously didn't work.

I powered off the radio and back on again, and there was the DVR, working
again as usual.

I'm thinking the contacts may need cleaning on the DVR/pins - but also
wondering if there's other things that I should check. I'm taking the radio
on a dxpedition soon and want everything to work properly.

Thanks,

Jeff N6GQ
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