did you ever solve the ch 2 WM internal audio with a Lectro WM.
I know this was a while back but I just put some mew Lectro RX into
some older Sony PDW-700's and really need to resolve this. The external
cable with the TA5 conn is just not reliable. It doesn't hold up in day to day use.
I will look further in the service manual and see if there is a jumper on the Mother board.
Jstigler