Mark Levinson No. 36 DAC,,,NEED HELP

i have the Mark Levinson No. 36 D/A Converter, but it not working,
"NO CODE" is displayed upon power-up. how to repair it? thanks!

jc12602-27-2018 3:01am

jc126 OP Details Discussions Posts This discussion Message User 3 posts 02-28-2018 at 02:00am Copy Comment URL Report Comment Edit Delete gs5556 when it power-up just show "NO CODE" on the screen, and all the button not working. someone said it is locked.
georgehifi Details Discussions Posts This discussion Message User 4,966 posts 02-28-2018 at 02:56am Copy Comment URL Report Comment Edit Delete It maybe locked if you don't have a good transport attached? Cheers George
jc126 OP Details Discussions Posts This discussion Message User 3 posts 02-28-2018 at 04:47am Copy Comment URL Report Comment Edit Delete how to unlock it?
georgehifi Details Discussions Posts This discussion Message User 4,966 posts 02-28-2018 at 06:22am Copy Comment URL Report Comment Edit Delete You still haven't responded to the question we both asked, have you got a known good transport hooked up to it?? As it may lock if you haven't. Cheers George
mikey8811 Details Discussions Posts This discussion Message User 194 posts 02-28-2018 at 08:07pm Copy Comment URL Report Comment Edit Delete I used to have one. A (defective) transport without a signal will not show "No Code". I've never seen that error in all the years of owning one.