Toshiba Microwave: not keeping time

Professional Repair Guide

What is this symptom?

Is your Toshiba microwave not keeping time? You may notice the digital clock drifting, resetting to default, or losing minutes. This issue can stem from power interruptions, a degraded internal clock backup capacitor, or even incorrect initial settings. Learn how to troubleshoot and resolve this common problem effectively.

Urgency: Low

Important Tips for Toshiba Models

  • Toshiba microwave clock functions typically require manual setting and do not automatically sync; power interruptions may reset the clock. (

Possible Causes

Power interruptions or voltage fluctuations causing clock resets/drift

How to Identify: Clock resets to default (e.g., 12:00 after power outages, fluctuations, or brief brownouts; pattern of time errors after known outages.

Part: Internal clock circuit / capacitor

Internal clock backup capacitor degraded or absent

How to Identify: Clock loses time even without full power loss; drifting clock over time; older units more affected.

Part: Backup capacitor/clock memory components

Incorrect initial clock setting

How to Identify: Clock simply incorrect but stable; setting method not completed properly.

Part: User settings

Issues with power supply or control board

How to Identify: Display issues extend beyond clock (other functions intermittent or unresponsive; internal components show power irregularities.

Part: Power supply / controller board

DIY Solutions

Reset and properly set the microwave clock

Easy 2–5 minutes
  1. Locate the ‘Clock’ or ‘Time’ button on the control panel.
  2. Press the ‘Clock’ button to enter time-setting mode.
  3. Use the numeric keypad to enter the current time.
  4. Press ‘Clock’ or ‘Start’ to confirm the setting.
⚠️ Safety First: Ensure the microwave is plugged in and the outlet is functioning.

Test on a different circuit or stabilize power

Moderate 10–30 minutes
Tools Needed: Outlet tester, Possibly a surge protector with voltage regulation
  1. Unplug the microwave and plug it into a different outlet on a separate circuit.
  2. Observe clock performance over time to see if problem persists.
  3. Optionally install a surge protector or voltage regulator to reduce flicker-related resets.
⚠️ Safety First: Do not use power strips not rated for microwaves; ensure surge protector is appropriately rated.

Professional Repairs

Replace degraded internal backup capacitor or repair controller board

Estimated Cost: $50–$150+

When to Call a Professional

Clock continues to drift or reset even after proper setting and stable power is ensured
Other microwave functions (display, controls) are malfunctioning
Signs of electrical component failure (burn marks, unusual noises)

Preventive Maintenance

  • Regularly check and reset the clock after power interruptions: Time drift or misdisplay
    Frequency: as needed
  • Use a properly rated surge protector with voltage stabilization: Clock resets due to voltage fluctuations
    Frequency: continuous

Frequently Asked Questions

Why is my Toshiba Microwave not keeping time?
Common causes include power interruptions, degraded internal backup capacitor, or incorrect initial clock settings.
How do I fix Toshiba Microwave not keeping time myself?
Reset the clock by pressing the 'Clock' button and entering the current time. Check if the issue persists after moving to a different outlet.
How much does it cost to fix not keeping time?
Professional repairs for this issue typically range from $50 to $150 or more, depending on the necessary parts.
When should I call a technician for not keeping time?
If DIY fixes don't resolve the issue or if you suspect problems with the power supply or control board, consider calling a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

70%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Power outage or surge causing reset
  • Faulty internal clock circuitry
  • Improper settings or user error

User Suggested Solutions

  1. Reset the microwave by unplugging it for 5 minutes, then plug it back in and set the clock again.

  2. Check the power supply and ensure the microwave is plugged into a surge protector to prevent future resets.

  3. If the issue persists, replace the internal clock circuitry. This involves disassembling the microwave and should be done with care.

Analysis based on 1 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Toshiba microwave oven with wifi, why can't it restore time ...

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