From: cd6699@notformail.com   
      
   On Sun, 30 Nov 2025 09:14:43 +0100, Reinhard Zwirner   
    wrote:   
      
   >Cursitor Doom schrieb:   
   >> On Sat, 29 Nov 2025 14:01:43 +0100, Reinhard Zwirner   
   >>  wrote:   
   >>   
   >>> Cursitor Doom schrieb:   
   >>>> On Sat, 29 Nov 2025 00:44:27 +0100, Reinhard Zwirner   
   >>>>  wrote:   
   >>>>   
   >>>>> Cursitor Doom schrieb:   
   >>>>>>   
   >>>>>   
   >>>>> [...]   
   >>>>>> Jeff, it's a Uher Report Monitor 4000 so mono only. ...   
   >>>>>   
   >>>>>    
   >>>>>   
   >>>>> This one?   
   >>>>   
   >>>> That's the machine, yes. But there's no schematics in this one.   
   >>>   
   >>> But you'll find it in my other post.   
   >>   
   >> I already had that one from RM, Reinhardt. Plus I also have a hard   
   >> copy service manual with a large scale schematic of another close   
   >> variant of this model. Unfortunately, neither of these totally   
   >> correspond to the 4000 I have here and the AGC section is *totally*   
   >> different from either schematic. :(   
   >   
   >Did you try to compare the AGC circuits of types 4200 var1/2 (stereo,   
   >2-track tape heads) and 4400 (stereo, 4-track tape heads) with the   
   >AGC circuit of your device? Those three schematics can also be found   
   >in RM.   
      
   The AGC is a central part on the main PCB rather than on a separate   
   board someone might have substituted at some point, so it seems like   
   very much an outside chance your idea would bear fruit. Nevertheless,   
   I'll give it a try..   
      
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