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It went pop ...the it stopped
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Chris Fletchall
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Joined: 12/08/2010 02:42:45
Messages: 33
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I was working on a install for a church that wanted us to set up there Christmas play. All Mics where Shure SM87 48v mics. 12ch of phantom power.

When turning on the phantom power buttons,,,on channel number 8 the speakers popped, the console powercycled with no presonus logo and no buttons lit up...basicaly a dead console.
A smell was coming out of the console all so.

We have already set up a support ticket and have the unit boxed up ready to ship back for repair, but my question is ...What could have failed, caused this and how can I prevent it from happening again on another install?

Luckily we had another console and hooked it up just the same as the first one and it worked flawless.

Any info would be welcome.

Thanks.
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gadget69
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Joined: 21/09/2010 03:56:19
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Location: Northern Mn
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I would suggest contacting Tech support, and get a ticket started. There are a number of issues that can cause this, and they are equipped to get to the bottom of this.
NOTE: If your having an issue, open a tech support ticket and bring the number here if you want help!
http://support.presonus.com

Tools:
OHCI tool and Latency mon:
http://forums.presonus.com/posts/list/11348.page

We, the few, that have done so much, for so long that now we can do everyything with nothing

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Chris Fletchall
Prenoob
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Joined: 12/08/2010 02:42:45
Messages: 33
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Thanks for the quick response , but as stated in my post.. we have already submitted a ticket and the unit is being shipped back to them for repair.

Im just asking if anyone eles has encountered a similar situation or knows what might have failed. as stated in my first post.

Thanks
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gadget69
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Joined: 21/09/2010 03:56:19
Messages: 5008
Location: Northern Mn
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Sorry...
I guess I have been reading a bit too much... starting to PARA-read

There are a few different issues that have caused these problems, Early on, there was a power supply issue, usually accompanied with a burnt electronics smell, not an overly noticeable smell, but a there none the less...

There have been DSP board issues, and Firewire port issues as well. You'll get a report of what was done and a pretty darn fast turnaround, possibly extended slightly by the season.

I had the Power supply failure issue, not total, but intermittently.. never couldn't get the show done.
NOTE: If your having an issue, open a tech support ticket and bring the number here if you want help!
http://support.presonus.com

Tools:
OHCI tool and Latency mon:
http://forums.presonus.com/posts/list/11348.page

We, the few, that have done so much, for so long that now we can do everyything with nothing

dbx forum moderator

Lenova Ideapad Z565
Best connectivity Express card/firewire 2 port (400) that does NOT suggest having the TI chipset. (always worked great)
BYTECC Express card (400/800)07150358281

Asus/AMD processor tower. This setups just works on all firewire devices.

Belkin N450 dual band router, works with SL and Ai mixers
Studiolive 16:4:2
SL Ai24.4.2
ABUSB 1818VSL
Faderport
USB pre interface
Studio one Pro V2
LABsubs

loads of audio, and studio gear, and audiophile sound gear (gearslut)
[Email] [Yahoo!]
andy@northpoint
Prenoob

Joined: 11/12/2012 18:24:40
Messages: 5
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Just a guess, but it could have been inadvertent double-tap or half-tap on the 48V button. By this, I mean that if the last 48V circuit that you actuated wasn't solidly closed, it is possible for an arc to be created from that circuit to its nearest neighbor (usually not a ground pot) and letting 48V onto a part of the board that wasn't designed for it - thus blowing that component. Advise: any time you're activating a power switch, whether it is your mains or a +48, be intentional about it.

The report you get back should also help. If you can talk to the tech who fixed it, you should be able to get a crystal-clear picture of what caused it - if it can be determined.
 
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