Too high a supply voltage was applied to a piece of test equipment. It all still works ok, except for some noise on the output, (noise which disappears when the data line is unplugged).
I found a cracked through-hole resistor (see pic), and thought I had the problem solved, but the resistor actually measures ok (
0.4ohm out of circuit).
But could this resistor still be the cause of the noise? (I don't have a schematic, but the resistor in question connects to the Q output of a D-Type latch. I think this latch works in tandem with the nearby ADC chip.)
If I were to replace this resistor regardless, would a
1/4watt, metal-film, low noise type be the way to go, and does the green colour of the shell represent anything (like temperature coefficient maybe)?
The 4 colour bands are (Brown/Black/Black/Silver). I thought this should represent 10ohms not 1ohm... 1/0/0/10% (10 with a multiplier of x1, and a tolerance of 10%), but am I correct in saying that if the 3rd band is black, it means no Zeros, but if the 3rd band is Gold then there's a decimal point between the first two bands...? Kinda confusing!