Trigger/Input is stuck ON

[stachows]

I have a one CTP16PC board that has flaked out input #2.

As of a power outage (all of a suddon, not slowly) yesterday, input #2 is constantly being triggered. I have been using it for my Halloween display. I had it set for Normally Open as it was controlling a button which was working perfectly.

Now it is constanly registering that it is triggered. I have removed the button and all wires. I unplugged and reset the controller using the jumper, tried to change it to N/C instead of N/O and back again, and it still registers triggers constantly. Everything else appears to be working normally.

This is frustrating... Any ideas?

Thanks,

Scott

[Greg Young]

stachows wrote:

I have a one CTP16PC board that has flaked out input #2.

As of a power outage (all of a suddon, not slowly) yesterday, input #2 is constantly being triggered. I have been using it for my Halloween display. I had it set for Normally Open as it was controlling a button which was working perfectly.

Now it is constanly registering that it is triggered. I have removed the button and all wires. I unplugged and reset the controller using the jumper, tried to change it to N/C instead of N/O and back again, and it still registers triggers constantly. Everything else appears to be working normally.

This is frustrating... Any ideas?

Thanks,

Scott

Is there anything that might be causing a short between the input pin header and ground trace on the board itself?

Greg

[stachows]

Hi Greg,

Great idea! Unfortunately, NO.

I just tested continuity between the bottom ground pin and the the pin for input #2.

The result was infinity.

Here is a diagram to explain the pins I tested.

Thanks,

Scott