Blank Screen

1. Confirm that the VAC is not hibernating by pressing a key on the VAC
2. Confirm that the VAC cable is securely connected.
3. Confirm that the VAC is getting the proper voltage * Fuses are not blown * Connections are OK
4. Power cycle the VAC
5. Replace the VAC with a known working VAC

Weird Characters on Screen

1. Confirm that he VAC is not configured to use another language
2. Power cycle the VAC
3. Replace the VAC

Fuzzy Screen/Characters on Screen

1. Confirm that the power (red wire) and ground (black wire) are connected directly to the battery
2. Add a diode to the negative side of the main cable harness
3. call support for further instructions