| ULN-2 hangs system periodically [message #86228] |
Thu, 13 August 2015 12:59  |
basskitten
Messages: 13
Registered: January 2013
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Junior Member |
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I have a ULN-2, firmware 2.2.08, connected to a brand new Retina iMac via the Apple Firewire-Thunderbolt adapter. When it works, it works fine, but after some period of use (average around 24 hours), it stops working. Any app that attempts to send audio to the ULN-2 just hangs, and has to be forced to quit. When this occurs, the only solution is to shut down and restart the iMac. I tried unplugging & replugging the cable, using different firewire/thunderbolt ports, but none of it makes any difference. The ULN-2 is being powered by an external "wall wart" supply - it does not appear to get enough voltage from the Thunderbolt port alone.
Is this a known issue? Is there any workaround?
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