Hi,
I beleive I have a damaged AI.
After correcting some wiring in a control panel I noticed one of the AI's wasn't reading the input signal. The AI was subject to 24VDC for the best part of a weeK!
Looking at the PCB, after the input terminal there is a capacitor and a resistor bank "RA4"?, then off the to main processor.
Are there any checks I can do or components that I can replace?
Cheers