Looking for technical info about Audiomat Recital MKIV.

I am about to take possession of a dead Audiomat Recital MKIV. I read a posting by member Audioeng (Scott) but can't find a way to get in touch with him. Scott described the repairs he made to his unit & mine appears to have suffered the same failure, with less collateral damage. As some know, Audiomat second hand market is not well supported by the company & it would seem info regarding bias adjustment is not available. Any help is greatly appreciated. My unit should be in my hands in a week or so & I am anxious to revive it.

Thanks,

Kev