I just read in your other post about this tester that you ;
Have modified it by grounding the case and are having problems getting one of the ranges to work correctly .....
I am sure I read somewhere that grounding the case of these cap checkers somehow affects the circuit's operation and so you may want to look into this ?
Every piece of test equipment I own has the case grounded either by the factory or by me , but when I was restoring my C2 , I read the warning about not grounding the case and went with the circuit 100% as Heathkit designed it .
Yep , you guessed it , my C2 works perfectly in all range settings .
Good Luck ....
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