i have this china made basic multimeter. i tested acv using ohm meter and i heard small boom. i opened up and found the fuse blown. i tested thr probe, acv, dcv and everything is working. except for ohmmeter. ohmmeter x 100k works but i suspect no longer accurate. but still i can adjust to 0 ohm. for x1, x10, x1k. all not working. i checked x1 resistor has very high resistance ,i replaced it with 20 ohms but still not working. for the left diode, it is showing always shorted both polarity. if i replace x1 resistor and diode, will it fixed the problem or are there any chance the transistor, capacitor and diode damaged?
also appreciate if u anyone can help me understand how the transistor and diode used in the circuit.
i did some research and found this circuit which is very similar to the circuit of my multimeter.
also appreciate if u anyone can help me understand how the transistor and diode used in the circuit.
i did some research and found this circuit which is very similar to the circuit of my multimeter.
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