I'm glad to be of some help. With reference to the "corrupt" TN?. Do you or have you done a STAT on the TN's card?.
What is the status of that port?. Does it say something like "2317"?
This can happen on a Option 11 when using the "MOV" command & a user picks up the phone of the "UNEQUIP" set that's still plugged in. It causes set relocation & you won't be able to "CHG", "OUT" the TN.
One answer is to attempt to activate a model set "Aries", If you have a spare M2616, M2008 etc & also have a "2616 M" / "2008 M" programmed on the Meridian OPT 11.
Usually you can key in ## & a default DN / TN is created. This will depend on how the model set has been configured in LD 11 & that model set "20" should have only one SCR key configured.
With a bit of luck, you will either be given a default DN / TN, Or the corrupted TN will be erased & left unequiped for you. It's just a case of doing "OUT" or "NEW" etc to rebuild the original TN.
All the best
Firebird Scrambler
Meridian Programmer in the UK