Hi,
I have two of these on a board that are suspected faulty, is there a easy way to test these in situ?
Or if I have to remove them whats the best way to test them?

Thanks

 

best to isolate the inputs and outputs if you can , put a positive voltage in and the output will invert it, put a ground in and the output will be positive.

http://www.datasheetlib.com/datasheet/194092/uln2823_allegro-microsystems.html

 

best to isolate the inputs and outputs if you can , put a positive voltage in and the output will invert it, put a ground in and the output will be positive.

http://www.datasheetlib.com/datasheet/194092/uln2823_allegro-microsystems.html

Thanks, this is the circuit, IC14 is in a socket so can be removed IC7 & IC8 outputs go to a connector on the board so it should be fairly isolated. So it's just a case of putting a voltage on each input in turn and check the output?