Blank Screen
- Confirm that the VAC is not hibernating by pressing a key on the VAC
- Confirm that the VAC cable is securely connected.
- Confirm that the VAC is getting the proper voltage * Fuses are not blown * Connections are OK
- Power cycle the VAC
- Replace the VAC with a known working VAC
Weird Characters on Screen
- Confirm that he VAC is not configured to use another language
- Power cycle the VAC
- Replace the VAC
Fuzzy Screen/Characters on Screen
- Confirm that the power (red wire) and ground (black wire) are connected directly to the battery
- Add a diode to the negative side of the main cable harness
- call support for further instructions