After I repaired my Ammeter by replacing a burnt-out 51 Ohm resistor, I had a number of comments suggesting that the smaller form-factor of the 0603 resistor I used will probably make it fail again...
So, I've ordered up some 1206 ones, the same as the original one in there, and I'm going to swap it out...
Let's see if it makes any difference!
Steve 2