Quote:
Originally Posted by bigus01
Measures the same 22 ohms.
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With the handset still disconnected, could you measure the resistance:-
Between terminals 5 and 6 on the telephone terminal block? Should be something like 105 Ohms on and off hook.
Between terminals 6 and 11 on the telephone terminal block? Should be something like 132 Ohms off hook and open-cct on hook. You may need to squeeze the switch-hook contacts together gently for this one: it will show you if they need cleaning!