Re: First mixer diode on a 7L18 : how to test (and possibly replace) ?
Wow, a 7l18 I want one!
Can you please upload some photos?
I have some experience with single diode mixers, I have two tek491
De: TekScopes@groups.io [mailto:TekScopes@groups.io] En nombre de Jose Luu
Enviado el: miércoles, 13 de enero de 2021 23:46
Asunto: [TekScopes] First mixer diode on a 7L18 : how to test (and possibly replace) ?
I am fixing a deaf 7L18, it is responsive to a 510MHz signal injected into the second mixer, I still have to test the 510MHz IF, I am anticipating that the first mixer diode has failed (likely from a power overload).
Testing the diode: I suppose I should pay attention to the voltage applied and possibly limit the current, 1V and a few milliamps?
Replacement: the part number I find on the service manual is: 119-0972-02 , googling it does not fetch much, any ideas, is surgery oof the A45 unit possible ?
Thank you for any insight
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