Mbox mini 3rd gen unable to monitor playback after phantom is activated?

[nibtgom]

My mbox has worked fine since i got it several months ago, this is very sudden change to the way it usually operates.

Today I activate phantom power on the mbox and now I can't monitor playback, of anything, including youtube, itunes, PT tracks etc. I've tried switching between headphones and speakers.

If I pull out the Mbox usb and reinsert it, playback will work again through the mbox, until I press in the phantom power button.

I reinstalled the last driver for version 1.3.4 released last October. (The new one is not compatible with my operating system). I did even turn the computer off and on again.

Would anyone have any ideas for me?

Any advice much appreciated! Thank you

SPECS:

OSX 10.9.5
MBOX Mini 3rd Gen
Pro Tools 11.3.1

[Ben Jenssen]

Very strange indeed.

I'd be willing to offer a wild guess, though; the mini gets its power via usb. When you activate 48v phantom power, there might be a short drop in power, that could make the driver software lose connection with the hardware. Could it be that your mini is connected to a usb port with not optimal power? The built-in ports on your mac should be best.

[nibtgom]

I only have one functioning usb port at the moment but yeah you're completely right. I was not plugging in my powered usb hub because it was previously working fine without it, so i just plugged it in and that +48 issue not longer occurs.

wooo thank you very much

[Ben Jenssen]

Originally Posted by nibtgom

I only have one functioning usb port at the moment but yeah you're completely right. I was not plugging in my powered usb hub because it was previously working fine without it, so i just plugged it in and that +48 issue not longer occurs.

wooo thank you very much

I'm glad it worked out!