Hi i've today noticed that my BM257s have problem with Ohms, when You try to measure something it always shows 0L.
I've tested all safety features, path from banana plugs through switch are going to pin 5 of 74HC4053D and pin 2 of Q10 VLR. (sot23?) (2SC5866TLQ?).
other functions are working fine, continuous mode, V, A, Diode, Capacity.