Search the Knowledge Base

Allegro: What can I do if the Allegro will not power up?

If the Allegro will not power up, try the following solutions:

Check the battery and charger.

Verify the battery has enough charge to power up the Allegro. Also verify the charging cable or docking station provides sufficient power to charge the Allegro. Use a voltmeter to verify the voltage output of the battery is at least 3.6 volts. If the voltage output is less than 3.4 volts, you may need to purchase a replacement battery. To help maintain the battery, plug the Allegro (or power dock) in a power source when not in use, such as each night and weekend.

Reset the software (warm reboot)

To perform a warm reboot, press and hold the On/Off power button for 5 to 7 seconds. Press Reset when the Power window displays.

Allegro Power Screen

Reset the hardware and restore the software (cold reboot)

To perform a cold reboot, press and hold the On/Off power button for 20 seconds. When the Power window displays, continue pressing the power button until the Allegro resets automatically. The display will then flash and the Allegro will begin reloading the operating system.

If a cold reboot does not solve the problem, turn off the Allegro and then disconnect it from any external power source (wall charger or power dock). Remove the battery pack inside the Allegro. After at least 30 minutes, reinstall the battery pack and then plug the Allegro in an external power source. Charge the battery for at least five minutes and then turn on the Allegro.

Support Options

800-229-3404, select 1, then press 3

Email Allegro Support Team

Watch Your Ideas Shape New Products

Do you know how we can improve AI products? Add your thoughts to our idea portal and you'll get automatic updates on how we're integrating your suggestion.

Allegro Services

Calibration Services

Allegro Training

Allegro training is available as web-based session or an in-person event at your location or our training facility in Austin, TX. Read more about Allegro training here or contact us for more information.