hello friends, I tell you that I have the same problem, since the last volume update, the power button flashes and my 5 "screen remains black, someone could guide me how to install the raspdac plugin using putty which is the scrip that I should use please.
thank you
I fixt my problem “Flashing Power-Button”
Finally, it’s very easy.
First of all, you go to this side: https://github.com/audiophonics/Raspberry-pwr-management.
At the bottom of the page is described how you have to proceed.
Use putty, start there with your IP-Adress.
login: volumio
password: volumio
Than follow the steps that described there. Thats all.
And after that, the power-button does’nt flash anymore. 
With best regards
tschuklo
thank you very much friend works well, could you help me install raspdac plugin 0.0.3 manually with putty
Does this break OTA updates?
edit: To answer myself, it doesn’t, OTA updates work.
Hello volumios,
I made a update yesterday and saw, that Volumio fixed the problem.
Take a look at the Plugin Management / System Tools there is a Plugin called Audiophonics On/Off.
Install it, voila, it runs perfectly.
Greetz and stay healthy in this difficult time
Good to hear it works for you 
Enjoy! And happy Easter 
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Will this plugin be updated for volumio3?
You should ask the author of this plugin, it is a community development.
Ok, I sent him a pm; thanks for the hint.