Behringer P16-M power issue

[nmalexandersen]

Hello all

I have 4 pcs of P16-M mixers, and one of them are having a serious health issue ...

We came to rehearsal and everything looked normal, but I discovered that the p16-m in question did not respond to incoming audio with green leds flashing. All p16-M units are powered over the network cable, from a working P16-D box. I turned the power button off and on again, only to experience the following ...

* The buttons on the unit did not light up. There is a faint light around two of the pots.
* The unit don't respond to any form of human interaction.
* You can hear a faint single frequency tone generated by the unit if you put your ear next to it.

I changed the network cable several times. I re-powered the unit ..but no luck.

Has anyone here experienced this for themselves ?
If so ... was it fixable ?

I suspect that this has something to did with the internal power supply.

Kind regards Nils