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phonola: Problem with the IF transformer number 4

Martin Renz Ernst Erb Vincent de Franco Martin Bösch Bernhard Nagel Otmar Jung Heribert Jung Eilert Menke 
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Forum » Radios and other type of sets (Physics) etc. » MODELS DISPLAYED » phonola: Problem with the IF transformer number 4
Paolo Gramigna
Paolo Gramigna
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15.Oct.17 21:29

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I am restoring one of those Phonola 577.

On my radio, the IF n° 4 (the upper right one, seen from the back) does not tune. The ferrite is inside and connected to the tuning screw, but there is no maximum tuning from full in to full out.

I suspect that one of the capacitors inside is faulty, but I have no idea about how to open the IF aluminium case in order to look inside.

Can someone help me?


Paolo Gramigna from Italy


Omer Suleimanagich
Omer Suleimanagich
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17.Oct.17 10:24

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This article was edited 17.Oct.17 10:24 by Omer Suleimanagich .