hifi engine

Carver AV 806 X refresh

I have this amp , newly acquired, there are 4 dead modules of 6 I can get new boards for the slaves (5) but cannot get the master board which happens to be bad, of course
Does anyone have familiarity w this amp?
Wondering if I can change out the master for a slave , the main difference between them is the back where there are connections for RC 5 , which I don't need
The schematic is available here but it does not show any details of the 2 different boards so it may be challenging to get values of individual components in order to rebuild it .
Thanks for any thoughts!