    
Riccardo
Tinkerer
Username: Riccardo
Post Number: 9
Registered: 12-2007
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, September 29, 2008 - 04:09 am: | 
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Hi there...
anyone has the wiring circuit of the Praktica LLC ? Mine is out of adjustment, but still works "reasonably". I guess the cell slightly aged, but still is reptty decent, adjustment by the two trimpots is not possible anymore, so I guess the bridge needs to be balaned again. I tried blindly changing the value of the two fixed resistors, but it didn't help. Without diagram I am at loss and trying to reconstruct it was a failure, it is not easy with the open and stop-down mode.
If there are instruction also no how to balance "open aperture" and "stop down" readings, it would be good too.
I found wirings for other, more simple Prakticas, but they are different enough, for example they show 3 trimpots. |
