No power or dead display
Other 186 187 Media Keypad
No power or dead display
This flow guides advanced technicians through initial troubleshooting steps for complex operational issues.
Qualified technician handoff: stop before live electrical testing, sealed-system refrigeration work, compressor service, or protected-compartment access unless a qualified technician is handling the work.
- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
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 exterior housing for obvious damage or obstructi...
technician-advancedmediumVisually inspect the exterior housing for obvious damage or obstructions.
Stop conditions- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 2
Confirm the main power disconnect switch is in the 'off' position bef...
technician-advancedmediumConfirm the main power disconnect switch is in the 'off' position before proceeding.
Stop conditions- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
Expected: Initial condition is documented before deeper diagnosis.
Evidence to note: note
- 3
Perform the initial diagnostic check using public-safe guidance.
technician-advancedmediumPerform the initial diagnostic check using public-safe guidance.
Stop conditions- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 4
Follow the next diagnostic step using public-safe guidance.
technician-advancedmediumFollow the next diagnostic step using public-safe guidance.
Stop conditions- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
Expected: Result is documented before continuing the route.
Evidence to note: note
- 5
Continue through the subsequent diagnostic steps using public-safe gu...
technician-advancedmediumContinue through the subsequent diagnostic steps using public-safe guidance.
Stop conditions- For any issues encountered during this flow, especially those involving electrical components, contact a qualified technician immediately.
- If troubleshooting requires accessing internal wiring or power sources, only a qualified technician should proceed.
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.