Problems with full sim LED's

[bubbling-under]

Thanks for confirming the test points..
Results were as I would expect All ports ok with the exception of:
L/4 no voltage out and L5 also no voltage
All configuration was double checked
L4 was being used for the SIM LED's and L5 the Tunze 6055 that stopped working.

The Tunze is now working ok on another port, but if you suspect this may be the problem perhaps I should return it to the Tunze dealer for testing

"Recently we had a case where defective electronics of the Tunze driver blew up some of our 1-10V circuits. Very weird was in that case that the problem in the Tunze driver occured not permanently, most time it worked well"

The problem with my Tunze Nano Stream 6055 was also very intermittent .... At one stage I also had a Tunze on port 4, before I added the additional interface and re-configured it for the LED - however the LED never worked on this port so it may also have been damaged by the Tunze