No power or dead display
Automatic Products 748 Showcase
No power or dead display
This initial diagnostic sequence helps verify basic power integrity and primary operational components of the unit.
- If testing reveals issues with the main power supply or internal electrical components, immediately contact a qualified technician for safe assessment and repair.
Checklist
Guided Diagnostic Steps
Work from low-risk checks toward technician-level inspection only when evidence supports it.
You can read or print the route now. The first checkbox click opens the service contact gate.
- 1
Visually inspect the power cord for any signs of external damage.
operator-intermediatemediumVisually inspect the power cord for any signs of external damage.
Stop conditions- If testing reveals issues with the main power supply or internal electrical components, immediately contact a qualified technician for safe assessment and repair.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 2
Confirm the main power source is connected securely to the unit's inp...
operator-intermediatemediumConfirm the main power source is connected securely to the unit's input point.
Stop conditions- If testing reveals issues with the main power supply or internal electrical components, immediately contact a qualified technician for safe assessment and repair.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 3
Check the power cord for damage and inspect the internal circuit brea...
operator-intermediatemediumCheck the power cord for damage and inspect the internal circuit breaker.
Stop conditions- If testing reveals issues with the main power supply or internal electrical components, immediately contact a qualified technician for safe assessment and repair.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 4
Verify the required voltage is present at the main operational leads...
operator-intermediatemediumVerify the required voltage is present at the main operational leads for a qualified technician.
Stop conditions- If testing reveals issues with the main power supply or internal electrical components, immediately contact a qualified technician for safe assessment and repair.
Expected: Result is documented before continuing the route.
Evidence to note: note
Tools for this route
Parts status
Exact public parts list not verified yet. Use this route to identify the system before ordering.
Candidate areas for part verification
Other Possible Issues
Switch routes if this symptom is not the closest match.