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Acer Chromebook 14 CB3-431-C7EX Troubleshooting Page
This is the troubleshooting guide of the Acer Chromebook 14 (model number CB3-431-C7EX). This page will aid users in guiding them to the right device page after diagnosis.
Hinge Pivoting Issues
Device screen not functioning smoothly or at all.
Blockage in Hinge
To ensure your device is moving free of any debris within the hinge, use any canned electronic duster to blow out any possible substances that may hinder the movement of the hinge.
If the problem still persists, the laptop may need a new display hinge. Problems such as noises coming from the display hinge area (cracking, crunching) or lack of rigidity in the screen means the display hinge needs to be replaced. You can find a replacement guide for the hinge here.
Device audio playback is malfunctioning.
If your audio sounds distorted or hushed, this may be a quick settings fix. Go to your device settings and ensure your drivers are up-to-date and audio settings are turned on. Make sure no mute buttons or volume controls are eneabled. Check the speaker holes are not obstructed and are clear of debris as well.
Lack of Audio
This may be a problem directly correlated to your on-board speakers. When the problem still exists and has not been cleared up, this is a problem with the Chromebook’s speakers. Click here to find a guide on speaker replacement.
Cursor / Track Pad Not Responding
Movement of cursor is erratic and/or not properly functioning.
Lack of Control
Make sure the track pad is clear of any fluids or other materials that could be an hindrance to response of touch. Press firmly on pad to make sure user is engaging the track pad fully.
If the track pad continues to not function to its full extent, whether that being jittery mouse control or loss of the “clicking” function in the track pad, replace the track pad using this detailed repair guide.
Headphone Jack Missing Playback
Headphone playback sounds distorted or in some cases nonexistent.
Distorted Headphone Audio
Use any electronic duster to clear the headphone jack adapter inside your Chromebook to ensure your headphone jack is clean and clear of any debris, this is to ensure the jack is receiving the correct contact on the audio channels. Go to settings and ensure you have chosen the right input for your headphones, as well as check your device compatibility through properties.
Headphone Playback Not Functioning
In this case, a new headphone jack may be needed. Headphone jacks can go out easily, as the insertion and extraction of the jack can put heavy wear over time on it. Click here for a guide on how to replace the headphone jack.
Device Power / Battery Life Issues
Device is not receiving power or battery has poor life.
Defective Charging Cord
Check your charging cord adapter (the one that goes into the computer) is debris-free and when plugged in has a snug fit. In addition to, Check the adapter in your computer itself has a clean and clear charging port so there is no weak link in charging the computer. If the problem persists, replace the charging cord.
After cleaning the ports to charge the Chromebook as well as replacing the charging cable, it may be time to change the battery on the device. If the battery only charges when the cord is plugged in, or does not charge whatsoever, click here to follow the battery replacement guide.