Audio Fix / setup help

Sony ULT Wear: check a charge that does not start

Sony ULT Wear — Observe the documented USB supply and charging indicator before treating a power problem as a Bluetooth failure.

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

Follow these checks in Audio Fix →

When this guide applies

Exact ULT WEAR / WH-ULT900N using its documented controls. No factory reset, pairing deletion, physical repair or guessed firmware minimum. The headset powers off while charging; listening and pairing are unavailable while connected to the charging supply. Direct computer charging requires a running computer, not a hub/sleeping source.

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

dry

Is the charging connection dry and free of abnormal heat?

Stop if there is liquid, damage, a warning or unusual heat; do not charge through an abnormal condition.

Look for: Choose only what you can confirm.

  • Manufacturer-documented ULT WEAR / WH-ULT900N Help Guide ↗pp.23–24, Charging the headset — USB charging uses the documented cable/adaptor. The orange charging light indicates charging and goes out at completion.Exact ULT WEAR / WH-ULT900N using its documented controls. No factory reset, pairing deletion, physical repair or guessed firmware minimum. The headset powers off while charging; listening and pairing are unavailable while connected to the charging supply. Direct computer charging requires a running computer, not a hub/sleeping source. · Source checked 2026-11-09

connect

Connect the documented USB charging supply

Use the supplied USB-C cable and a suitable USB AC adaptor. Stop listening for this comparison.

Look for: Complete this one check, then report the observation.

  • Manufacturer-documented ULT WEAR / WH-ULT900N Help Guide ↗pp.23–24, Charging the headset — USB charging uses the documented cable/adaptor. The orange charging light indicates charging and goes out at completion.Exact ULT WEAR / WH-ULT900N using its documented controls. No factory reset, pairing deletion, physical repair or guessed firmware minimum. The headset powers off while charging; listening and pairing are unavailable while connected to the charging supply. Direct computer charging requires a running computer, not a hub/sleeping source. · Source checked 2026-11-09

light

Does the orange charging light appear?

Observe the actual indicator. An absent or abnormal flashing light needs the exact charging troubleshooting instructions.

Look for: Choose only what you can confirm.

  • Manufacturer-documented ULT WEAR / WH-ULT900N Help Guide ↗pp.23–24, Charging the headset — USB charging uses the documented cable/adaptor. The orange charging light indicates charging and goes out at completion.Exact ULT WEAR / WH-ULT900N using its documented controls. No factory reset, pairing deletion, physical repair or guessed firmware minimum. The headset powers off while charging; listening and pairing are unavailable while connected to the charging supply. Direct computer charging requires a running computer, not a hub/sleeping source. · Source checked 2026-11-09

finish

Disconnect after charging completes

Wait for the charging indicator to go out, then disconnect the USB cable. If charging fails to complete normally, stop and use support.

Look for: Complete this one check, then report the observation.

  • Manufacturer-documented ULT WEAR / WH-ULT900N Help Guide ↗pp.23–24, Charging the headset — USB charging uses the documented cable/adaptor. The orange charging light indicates charging and goes out at completion.Exact ULT WEAR / WH-ULT900N using its documented controls. No factory reset, pairing deletion, physical repair or guessed firmware minimum. The headset powers off while charging; listening and pairing are unavailable while connected to the charging supply. Direct computer charging requires a running computer, not a hub/sleeping source. · Source checked 2026-11-09

Possible result

Checks completed — record your result

Completing these checks is not a claim that your problem is solved. Record what you observed. No Audio Review physical test is claimed.

steps completed

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

    Possible result

    Confirm the missing detail first

    Use the linked instructions for your exact equipment. Do not guess a menu, version, accessory or observation.

    insufficient data

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

      Possible result

      Continue with model-specific support

      These checks do not identify a cause or a failed component. Tell the manufacturer your exact equipment, software and last observation. Do not repeatedly reset equipment or buy a replacement based on this result.

      next support

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

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