On 2/7/19 12:06 AM, gregdunn@... wrote:
Replaced it with a known good part (though not an exact replacement), and it only made a slight improvement.? Now the readings are 2-3x what they should be up to about 100K¦¸ (steadily getting worse at higher resistances) but it still reads OL on a 1M¦¸ resistor.
Have you tried checking the volts at output of U3 and the pots R59 R64 and the rotary switch contact next to R59?
Was it dirty at all? If so, is there conductive dirt on rotary switch?
Are R53 R52 good value?
