Pro tools 2018.12 & mbox pro 3: i don't hear external synth

[Algiu]

Hi all,
running PT 2018.12 and mbox pro 3, until the other day everything worked perfectly, a few days ago I don't hear anymore my synths and external device. Virtual instruments work normally.

Of course midi signal is correct for every synth and i see it on PT channel.
On my mbox 3 pro i see meter level of every synth channel but i don't see meter level output on PT channel and there is no sound.

thanks everyone
alessandro

[Southsidemusic]

Something has changed with your setup but goto settings in PT and choose i/o in the pulldown menu and there under i/o press default on in/out/aux on both pages i.e Input and Output pages. Then see if that helps.

[Algiu]

Thanks Southsidemusic
I have already done this test without result

[Algiu]

another indication, I tried pro tools first 2019.6. All working fine