grundig: Radio works FM/UKW but not on AM/MW

ID: 416930
? grundig: Radio works FM/UKW but not on AM/MW 
15.Apr.17 02:37
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Omer Suleimanagich (USA)
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Omer Suleimanagich

Radio only is working on FM mode. My question is, I understand that zener diodes and sometimes varistors are used, is this a zener diode issue?

Also, I would like to replace ALL the zener diodes in this radio, but I don know what values

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grundig: Radio works FM/UKW but not on AM/MW 
15.Apr.17 11:30
39 from 1568

Michael Watterson (IRL)
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Why replace zener diodes? They are rarely ever faulty in battery equipment.

If it works on any SW band, then suspect a connection to the ferrite stick loop aerial.

See first is AM IF working.

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grundig: Radio works FM/UKW but not on AM/MW 
16.Apr.17 00:28
88 from 1568

Omer Suleimanagich (USA)
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Omer Suleimanagich

This unit is battery and ac  Grundig, during the sixties had many different models that needed zener diodes replaced in their transistor units (from my own experiance)

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