On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Device not powering on, intermittent shutdowns, or failure to run on battery due to power supply, cord, or battery-related issues.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the device from active patient use if it cannot maintain power reliably
- Transfer monitoring to a known working unit
Expected: Patient is safely monitored on alternate equipment
Why it matters: Loss of power results in complete loss of monitoring
Verify the Reported Issue
- Attempt to power on the device using both AC power and battery
- Observe behavior:
- No power at all
- Powers on only when plugged in
- Shuts down when unplugged
- Flickering or intermittent power
Expected: Clear identification of how the failure presents
Why it matters: Helps isolate AC vs battery-related issue
Check AC Power Source
- Plug the device into a known working outlet
- Test outlet with another device
- Try a different outlet if needed
Expected: Device receives consistent AC power
Why it matters: Rules out facility power issues before device troubleshooting
Inspect Power Cord and Adapter
- Ensure cord is fully seated in device and outlet
- Inspect for fraying, bent prongs, or damage
- Swap with a known good cord if available
Expected: Device powers on consistently with a good cord
Why it matters: Damaged cords are a common and easily overlooked cause
Check Power Indicator Lights
- Confirm AC power light illuminates when plugged in
- Look for charging indicator when battery is installed
Expected: Indicators reflect proper power input and charging status
Why it matters: Helps determine if internal power supply is functioning
Test Battery Operation
- Disconnect AC power and attempt to run on battery
- Ensure battery is properly installed
- Observe runtime and stability
Expected: Device operates normally on battery
Why it matters: Confirms battery health and connection
Inspect Battery Condition
- Look for swelling, leakage, or corrosion
- Check battery age if known
- Replace with a known good battery if available
Expected: Device functions properly with a good battery
Why it matters: Batteries degrade over time and are a common failure point
Check Battery Contacts and Compartment
- Ensure contacts are clean and not bent
- Remove any debris or corrosion
Expected: Solid connection between battery and device
Why it matters: Poor contact can prevent charging or operation
Perform a Power Reset
- Remove AC power
- Remove battery
- Wait 30–60 seconds
- Reconnect AC power and restart
Expected: Device powers on normally if issue was transient
Why it matters: Clears minor internal power control faults
If the Problem Persists
If the device still does not power on or fails to maintain power after these checks, common external causes have been ruled out. The issue is likely internal (power supply board, charging circuit, or internal wiring).
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Knowing when to stop prevents unnecessary risk and wasted time.
Clinical Use Tip
Never troubleshoot power issues while the device is actively monitoring a patient. Always transfer the patient to a functioning monitor before testing power reliability.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Device will not power on and shuts off when unplugged from AC."
Cause
What was observed during troubleshooting.
Example:
"Failed internal battery not holding charge and degraded power cord connection."
Resolution
What action was taken.
Example:
"Replaced battery and power cord; verified proper operation on AC and battery power."
Helpful Details to Include (If Known)
- Outlet tested and confirmed working
- Power cord swapped
- Battery replaced or tested
- Indicator lights status
- Any intermittent shutdown behavior
- Physical condition of battery compartment
- Final device status (operational or sent for repair)
Final Thought
Power issues should always be approached from the outside in—starting with outlets, cords, and batteries before assuming internal failure. This protects patient safety, saves time, and ensures accurate troubleshooting. Proper escalation and clear documentation are just as important as fixing the problem.
That is successful troubleshooting.