D440 Companion Link failure

[agentsmith]

Do you have a different digital cable you can try to connect the two units?

Also do you have a trigger cable connected as well? If yes you might wish to try disabling this in the configuration and remove it from your setup temporarily to see if things work.

p.s. If you have tried these two steps, my apologies, I see you also changed SPDIF cables recently.

Thanks baddog, last thing you need to do is to apologize for trying to help!

I did try to replace the RS232 link cable as well as the SPDIF cable

I also tried no link cable but neglected to change the configuration files in my SD card.  Would that have made a difference?

In any case I have brought the companion to work this morning and will bring it to my dealer for debugging this afternoon.

thanks again.