From: reinhard.zwirner@t-online.de   
      
   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.   
      
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