Bill;
R22 in the sensors is a sense resistor that tells the controller which sensor
is attached. It is a very low stress part that sees at most 5 volts at very low
current. R22 is different for each sensor - the values shown in the schematic
are not necessarily correct. Also, these are precisio
My W2 wattmeter suddenly stopped working properly this morning along with
that dreaded smoke smell. The smell came from the 2KW sensor unit and upon
inspection R22 which is a 1K in the sense circuit is burned. Of course
it's surface mount but I think I can replace it OK. If not with another
surf
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