Ross Video - RVS216A or RVS210A video mixer "Service Manual" sought.

[minsik]

Hi looking for a possible service manual for a Ross Video video switcher RVS216A an 16 input analog mixer with effects, fading, wipe etc.
Ross Video support forum have helped by providing a package ZIP of related info but no actual cct into. the operation manual does have very basic block diagram stuff.
Looking to work on a unit thats quite old and now has a temperature fault when hot and doing a fade it blacked out and needed a reset and a couple of other  temperature related faults. 

Yes i have bought the old freezer spray and have a hot  air source (favorite hair dryer)  so equipped as well as can be I suppose.
Seems I have gone as far as the source and they cant help more than they have done so. This is just a long shot try!
I believe was also available in RVS210A 10 input maximum version so that would also be great if I can get the actual schematics. 

thanks for considering.
Minsik.