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TC1 lcr-meter transistor-tester fix

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Glide:
My one is showing just zener diode now, I found out that D2 is dead. Can you please tell me the value for D2.

madires:
If D2 is related to the boost converter for the Zener test voltage then it should be an SS18. Any jellybean Schottky diode rated for >=80V is fine.

Glide:
Thank you, I  have around a BAS86 but is rated just for 50V. You think I can use it?

madires:
It depends mainly on the output voltage of the boost converter and the type of converter. There are several models of the TC-1 (and family) with Zener test voltages ranging from about 25V up to 45V. For a model with a lower output voltage a 50V Schottky could be ok.

Glide:
I think is busted, now is showing 330pF 1-3 without nothing connected.

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