I have changed the optos, and put in a new opto 10 board. Still a problem, seems to work intermittently.
I havent worked on too many opto problems before, usually only just cleaning them up.
This problem has me stumped??
When i rove the optos and put them lined close together they work fine.
But when they ate installed they seem to work intermittently??
Connectors seem ok, tested ok.