I'm a bit lost with it now. Pop bumper not working at all now as well. Could it be an issue with the board. Transistor for the left sling has gone again. Any advice on where I should start looking? I tested coils and fine. Diodes fine. Disconected special solenoid switch connector and was still energised until tranny gave up. So I guess it's not a closed switch. Could it be a bad chip or something on board? Thanks in advance for any help.