Re: Toasted Avo 8 Mk V shunt
I think I've found the reason why I can't locate the swamp resistor, someone in the past must have removed it, the resistors that I added to make the meter read correctly I inserted between a solder tag on the meter movement and the red lead that came from it, I've just traced this red lead and also a black lead that was soldered to the meter chassis and these are the leads that are shown just to right of centre in the attached photo in post #8, these leads have been crudely re-joined together and go to the switch pcb, I've re-soldered the red lead back on the the meter movement solder tag and put my resistors between the other end of the lead and the pcb. I needed 1676Ω which I've made up from a 1K5 and a 180R and it works fine.
I can't think why both the red and black leads have been tampered with as the circuit shows the swamp in the +side of the movement.
John
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