Nerve Vision troubleshooting ZDSPB.com > Tech index > SP Nerve > Troubleshooting and repair > Vision malfunction
This includes problems relating to the Vision eye only. Please refer to the other Troubleshooting guides if necessary.

Listed are the gun's symptom along with a series of possible causes, and how to remedy them. The possible causes are in a specific order, more likely first with the less likely causes lower down the list. When diagnosing problems, you should try each item listed in order.

Marker doesn't fire with paint loaded (stock board).
· Verify that you are in Vision mode.
· Vision mode on the stock board will only fire if it detects a ball load into the chamber. To test this, pull the trigger in Vision mode so the LED is blinking slowly, once every second (showing no ball loaded). Then, drop a paintball into the chamber, push it out, then drop it in again (you MUST do it twice in this situation). The board should then register the ball loaded. If not, then there may be another electronics issue (connections most likely).
· Make sure the eye is plugged in with the silver contacts facing toward the board (different than the Shocker/Impulse eyes).
· Clean the Vision eye and make sure it is clear of any paint splatter or other debris. If any of the pins for the eye are being electrically jumped (as with paint or other debris), the eye may be working but not detecting a difference in voltage...this means it won't detect a ball load when it loads. Clean the eye.
· Check the wire harness for damage; replace if unsure.
· Check the pins inside the connectors for the wire harness on both boards (see Bent Pins at the bottom of the page).
· Check the wire harness for any paint splatter. This may cause a jump in the circuit and exhibit a problem.
· Remove the Vision eye from the body and check to see if it has been disconnected from the ribbon. If it is loose, then it will need to be repaired or replaced.

Vision malfunction; marker doesn't fire with paint loaded (aftermarket board).
· Verify that your eyes are on.
· Different boards work differently, however they all tend to fire only when a ball is loaded and not fire when a ball isn't loaded. This is unlike the stock boards. If you drop a ball into the chamber and it isn't detected, move on to the below steps.
· If you are using a Predator 5.0 board, increase your eye sensitivity. Adjust it between 2-20, the higher the setting, the higher the sensitivity. Higher sensitivity will function to detect darker paintshells. Don't set the marker to setting 1 unless you're using custom-installed beam-break eyes. Note: Virtue boards do NOT have adjustable eye sensitivity. What Virtue calls "sensitivity" is actually a delay time used when detecting the ball, it has nothing to do with how sensitive the eye operates. Adjusting this won't help.
· Make sure the eye is plugged in with the silver contacts facing toward the board (different than the Shocker/Impulse eyes).
· Check the wire harness for damage; replace if unsure.
· Check the pins inside the connectors for the wire harness on both boards (see Bent Pins at the bottom of the page).
· Check the wire harness for any paint splatter. This may cause a jump in the circuit and exhibit a problem.
· Remove the Vision eye from the body and check to see if it has been disconnected from the ribbon. If it is loose, then it will need to be repaired or replaced.

Vision malfunction; marker fires with no paint loaded. (applies to aftermarket boards only)
· Clean the Vision eye and make sure it is clear of any paint splatter or other debris. If any of the pins for the eye are being electrically jumped (as with paint or other debris), the eye may be working but not detecting a difference in voltage...this means it thinks a ball is continuously loaded, when in fact nothing is loaded. Clean the eye.

Bent Pins in Wire Harness Connector:
A sample picture of this issue can be seen here:
Bent pins
In the above picture, the third pin is bent down right at the base.

Related Links:
· Troubleshooting general electronics problems (Shocker SFT)
· Troubleshooting Shooting/Leaking (Nerve)