Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Schematics and Layouts => Topic started by: paelgin on April 09, 2020, 12:11:02 PM
Howdy all. Attached is the PDF schematic of the Peavey PV6-USB mixer. I am posting this as well as my journey, struggles and questions as I work to repair a broken mixer.
I have seen online comments regarding power supply for these older mixers: it is critical to note that the non-USB models require a 16 volt AC adapter, while the USB models require a 15 volt DC supply. I will also post a picture showing the input requirements shown on the back of the mixers.
The mixer I am trying to fix had a serious power problem which blew the NCP3063 boost/buck/inverting converter surface mounted chip apart. It was so bad that it burned the top layer of the board down to the fiberglass matting below (I think I have a picture; if so I will include it too).
My questions will start in my next post as I work with my meter to see why the mixer works but the USB does not.
Phil in gorgeous Young Harris, Georgia, USA