J Mathieson

With the closing of Costal Chip Works, I am at lost on this issue.   I have a TNC-Pi connected to Pi3 being used with BPQ32.  The packet seems to work.  Of late I noticed the red ptt led does not light.  The unit transmits and keys the radio so the ptt circuit is woring.  I have checked the led and it is fine.  Anyone else have this happen?