Portronics Decibel 20 — Troubleshooting Guide

TABLE OF CONTENTS

• Quick Troubleshooting
• 1. Soundbar Does Not Turn On
• 2. Bluetooth Is Not Connecting
• 3. Bluetooth Connected but No Sound
• 4. Speaker Turns Off Automatically
• 5. USB Playback Is Not Working
• 6. Micro SD Playback Is Not Working
• 7. AUX Playback Is Not Working
• 8. FM Radio Does Not Scan or Reception Is Weak
• 9. TWS Pairing Is Not Working
• 10. Calls Are Not Working
• 11. Soundbar Does Not Charge
• 12. Volume or Track Controls Do Not Work
• 13. Battery Runtime Seems Short
• Still stuck?

Quick Troubleshooting

1. Soundbar Does Not Turn On

1. Connect the charging cable to the soundbar's charging port.
2. Use a suitable USB power source.
3. Allow the speaker to charge.
4. Press and hold the Power Button for about 3 seconds.
5. Check whether the LED indicator turns on.

2. Bluetooth Is Not Connecting

1. Turn on the soundbar.
2. Open Bluetooth settings on your phone, tablet or computer.
3. Search for Decibel 20 and select it.
4. If it does not connect, forget/remove the saved Decibel 20 entry and pair again.
5. Keep the phone within approximately 10 metres.

3. Bluetooth Connected but No Sound

1. Confirm the soundbar is connected to your device.
2. Make sure Bluetooth mode is selected.
3. Increase the volume on your source device.
4. Press and hold “+” to increase soundbar volume.
5. Make sure playback is not paused.
6. Disconnect and reconnect Bluetooth if needed.

4. Speaker Turns Off Automatically

The speaker may turn off when it is not receiving a Bluetooth signal.

1. Turn on the soundbar again.
2. Reconnect your phone through Bluetooth, or select another playback mode.
3. Start playback.

5. USB Playback Is Not Working

1. Check that the USB flash drive is fully inserted.
2. Confirm it contains compatible audio files.
3. Short-press the Mode Button to select USB mode.
4. Remove and reinsert the drive.
5. Try another compatible USB drive if available.

6. Micro SD Playback Is Not Working

1. Insert the Micro SD card securely.
2. Confirm the card contains supported music files.
3. Select Micro SD mode if necessary.
4. Remove and reinsert the card.
5. Try another compatible card if available.

7. AUX Playback Is Not Working

1. Connect a compatible 3.5mm AUX cable to the soundbar and audio source.
2. Check that both ends are fully inserted.
3. Select AUX mode.
4. Increase the volume on the source device.
5. Test with another compatible cable or source if available.

8. FM Radio Does Not Scan or Reception Is Weak

1. Connect the charging cable to the soundbar's charging port so it can act as an antenna.
2. Turn on the soundbar.
3. Select FM mode using the Mode Button.
4. Short-press Play/Pause to start automatic channel scanning.
5. Wait for scanning to finish.
6. Use the track controls to move between available stations.

9. TWS Pairing Is Not Working

1. Use two Decibel 20 speakers.
2. Turn Bluetooth off on your phone or disconnect it from the speaker.
3. Turn on both speakers.
4. Press and hold the Power Button on one speaker to start TWS pairing.
5. Wait for the connection and check the blue LED indication on both speakers.
6. Connect your phone only after TWS pairing is complete.

Important: TWS pairing is only guaranteed to work reliably between two Decibel 20 units from the same production batch. Pairing speakers from different batches may fail or behave inconsistently. Check the batch/date code on both units if TWS pairing doesn't work.

10. Calls Are Not Working

1. Ensure the soundbar is connected to the phone through Bluetooth.
2. Check that call audio is routed through Decibel 20.
3. Short-press Play/Pause to answer or end a call.
4. Press and hold Play/Pause for about 2 seconds to reject an incoming call.
5. Move closer to the soundbar if the voice sounds unclear.

11. Soundbar Does Not Charge

1. Check the charging port on your unit.
2. Use a cable that matches the port. The manual specifies Type-C, while the current product listing text refers to a USB-micro charging cable.
3. Do not force the connector.
4. Check the cable and USB power source for visible damage.
5. Try another suitable power source if available.
6. If it still does not charge, note the LED behaviour and contact support.

12. Volume or Track Controls Do Not Work

• Play / Pause: short-press Play/Pause.
• Next Track: short-press “+”.
• Previous Track: short-press “−”.
• Volume Up: press and hold “+”.
• Volume Down: press and hold “−”.

13. Battery Runtime Seems Short

1. Fully charge the speaker.
2. Test playback at a moderate volume.
3. Note the playback mode and runtime.
4. Contact support if runtime is significantly lower than expected for your unit.

Still stuck?

If the issue persists after performing all troubleshooting steps, please raise a support request.

Our support team will assist you further.

Support

• Visit: www.portronics.com
• Support Portal: support.portronics.com