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Grunow model 580 only tracking on half of tuning cap
#7

Finally, after days of tracing, I have it functioning as it should. I've never seen a set as messed up as this one was, yet all the paper caps looked factory. They even had the factory numbers which corresponded to the schematic stamped on them. The only thing that "appeared" molested was the electrolytics were replaced. But someone decades ago majorly shuffled components around the volume and tone controls and basically it wasn't connected right to the 2nd IF. As soon as I got it wired correctly, with the proper caps and resistors where they should be, the trimmer that wasn't doing anything worked normal, and I had the full range on the tuner. Lesson learned....never assume anything with regards to what appears to be untouched. It can and will kick your....

   

Greg V.
West Bend, WI
Member WARCI.org





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