Quoted from awesome1:If the ball goes to the top of the building, but then is lost and a ball search starts... most likely the "Exit Opto" at the top rear, leading to the building roof. The wire lead broke on mine and this is what happened. Only had to replace the broken half, but did need a new switch.
FIXED. Thanks for this tip.
For me, the wire lead wasn't broken, but the opto transmitter did need to be adjusted.
For the others having this issue, these steps may help with troubleshooting...
- Is your exit opto LED on? It should be on all the time unless a boy is rolling to the roof. You can see the LED with the naked eye.
IMG_0811 (resized).jpeg
If it's not on all the time...
- Go into the menu and lower the building so you can send balls up to the roof (diagnostics -> game -> building)
- Go into switch test
- Roll a ball through the building into the VUK. See if you are getting the "exit opto" switch triggered. For me, it was only triggering ~25% of the time.
- Accessing the opto is a bit of pain... Remove the two metal wireforms (2 screws each) and remove the center building (3 screws)
- It should look like this:
IMG_0810 (resized).jpeg
- Check for broken wires. See if you can adjust (wiggle) the transmitter or receiver so that the LED is on constantly.
- You can unscrew the opto a bit to adjust or remove it altogether as necessary. Note: The left building is easy to take off, but a bit of a pain to put back on. Avoid taking it off if possible.
Good luck!