TSPP ball search issue

[Gruntis]

Hey guys,

Just picked myself up another TSPP, missed the old one too much. Overall its in good shape, cleaned up especially nice.
One problem I do have is every time I switch it on, it does a ball search and fires all the balls out of the trough. After all the balls are back its good to go.
Anyone have any ideas on where would be a good place to start looking 

[Steevsee]

Provided the correct number of balls are installed, it could just be a dirty trough opto or a faulty/misadjusted trough switch.

You can run diagnostics to test the switches. 
Switches 10 to 15 are the trough switches with 14 and 15 both optos.

[Gruntis]

Provided the correct number of balls are installed, it could just be a dirty trough opto or a faulty/misadjusted trough switch.

You can run diagnostics to test the switches. 
Switches 10 to 15 are the trough switches with 14 and 15 both optos.

Thanks, will give that a look.
Cheers