KevinOBrien Posted August 3, 2016 Share Posted August 3, 2016 I had to swap out my old Atlona AT-PROHD88M matrix because it died. I installed a new AT-UHD-PRO3-88M and it all seems to be good except that there was a serial input into the old matrix from the HC-300 serial 2 slot. In the new matrix, there is no serial input. I'm guessing that this is the last connection issue that would resolve why I can't switch between sources after I turn on one source in one zone. Any ideas? TIA Link to comment Share on other sites More sharing options...
Cyknight Posted August 3, 2016 Share Posted August 3, 2016 Pro series uses a different driver altogether - you can't simply swap them out - it's IP controlled as well. Link to comment Share on other sites More sharing options...
KevinOBrien Posted August 3, 2016 Author Share Posted August 3, 2016 Thanks Cyknight. I'm a novice at this. Any ideas on how to resolve it? Link to comment Share on other sites More sharing options...
Cyknight Posted August 3, 2016 Share Posted August 3, 2016 Yes - call your dealer... Link to comment Share on other sites More sharing options...
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