service manual for Marsh A 400 S power amp


In a fit of cleaning I shorted the input to my Marsh A 400 S power amp. The right channel is now dead. No hum, no buzz....and no music. I can't see any melted components. If anyone who has a service manual or knows where I can obtain one would contact me, I would greatly appreciate it. NQ,Dennis.
dennis_partlow
I believe I still have 400 manual at home. I'm replacing 400 with arc ref 150 this week 
my final major upgrade
Did you either of you find the A-400s service manual?  I also need service manual for A-200s. 

Between the two above models, is one model more refined than the other, and if yes, which model is better?  (Unrelated to magnitude of power, which obviously favorst the 400.) 
Hi
I also need a service manual for A400s amp short out booth channel.
Did you find it? Any body? morakotkh@gmail.com