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Marshall Bromley 450: check the charging input and supply

Marshall Bromley 450 — Check the charging input and supply. Check the documented control or configuration and record the actual result.

Manufacturer-documented Reviewed 2026-11-09 · Revision 1

Follow these checks in Audio Fix →

When this guide applies

Exact Marshall Bromley 450. Completely dry, undamaged equipment; no battery removal or repair. Bluetooth source context; no reset or saved-pairing deletion is prescribed.

Connection scope: Bluetooth. Symptom: My device or case won’t charge.

This is a documented check, not a diagnosis of your equipment. The model name does not confirm the selected input, mode, software or connected partner.

If your exact model or a required setting is unknown, use the “I don’t know” branch below. Do not apply a similarly named model’s instructions.

Checks and possible outcomes

Start at scope. Follow the link that matches what you actually observe. Alternative branches are not a single sequence of actions.

scope

Confirm the setup

The speaker and charging connector are dry and undamaged, with no abnormal heat.

Look for: Choose only what you can confirm.

  • Manufacturer-documented Bromley 450 — charging ↗Charging supply/input; battery indication — With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.Exact Marshall Bromley 450; no other generation’s control, unsupported saved-list capacity or reset gesture. · Source checked 2026-11-09

a1

Prepare the model charging connector

Locate the actual documented input on the exact model; do not force a connector.

Look for: Complete this one check and observe its actual response.

  • Manufacturer-documented Bromley 450 — charging ↗Charging supply/input; battery indication — With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.Exact Marshall Bromley 450; no other generation’s control, unsupported saved-list capacity or reset gesture. · Source checked 2026-11-09

a2

Connect the documented supply

With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.

Look for: Complete this one check and observe its actual response.

  • Manufacturer-documented Bromley 450 — charging ↗Charging supply/input; battery indication — With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.Exact Marshall Bromley 450; no other generation’s control, unsupported saved-list capacity or reset gesture. · Source checked 2026-11-09

a3

Observe battery progression

Check the actual battery-level or charging indication over the interval, without adjusting audio controls during the observation. Record progression rather than infer a universal light colour.

Look for: Complete this one check and observe its actual response.

  • Manufacturer-documented Bromley 450 — charging ↗Charging supply/input; battery indication — With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.Exact Marshall Bromley 450; no other generation’s control, unsupported saved-list capacity or reset gesture. · Source checked 2026-11-09

result

Check the actual result

Can you confirm normal battery charging progression?

Look for: Choose only what you can confirm.

  • Manufacturer-documented Bromley 450 — charging ↗Charging supply/input; battery indication — With the battery installed normally, connect the supplied mains lead to the speaker mains input and then to a suitable wall socket. The speaker USB audio/output port is not this mains input. Unplug the wall end first before later disconnecting the speaker end.Exact Marshall Bromley 450; no other generation’s control, unsupported saved-list capacity or reset gesture. · Source checked 2026-11-09

Possible result

Confirm the unknown detail first

Do not infer a setting, gesture, source version or indicator. Consult the exact model documentation before continuing.

insufficient data

Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

    Possible result

    Keep the last observation for support

    These checks do not identify a failed component. Record the exact source, software and last observed response for manufacturer support. Do not clear pairings or repeatedly reset the product.

    next support

    Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

      Possible result

      Checks completed — record the observed result

      Completion records the observation in this setup; it is not a guarantee that the original symptom is resolved. No Audio Review physical test or measured performance is claimed.

      steps completed

      Reaching this result does not mean the issue is solved. Only your own feedback can report improvement.

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