Phonic 740 200w Amp
 

Hi all,

As I've been unable to source a diagram for this model I've made an
attempt at drawing it out myself. I thought I was quite 'au fait' with
amp design but this one is something I haven't seen before.
The outputs are 2SC5200 and 2SA1943 but there are also RFP50NO6 fet's
which appear to be fed from another power line from the main semis and
connect to their collectors. The o/p trannies are fed to their power
rails by diodes.
I've had a burn up of one channel and before I start replacing
everything I want to make sure I understand how it functions.
Are there any schematics out on the web with this type of design as that
would save me a lot of time tracing the board.

Cheers
Bob