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Sony PS-LX5BT: Compare analogue noise without a simultaneous computer connection

Sony PS-LX5BT — Compare analogue noise without a simultaneous computer connection. Follow the exact documented route and keep the actual result.

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

Follow these checks in Audio Fix →

When this guide applies

Exact Sony PS-LX5BT. External USB disconnect interrupts computer recording; no mains, signal-ground or internal work. Only normal external user controls; no mains modification, chassis opening, reset or firmware installation.

Connection scope: Analog line / headphone audio · Turntable / phono audio. Symptom: I hear hum or buzzing.

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 exact setup

Are analogue amplifier listening and computer USB connected simultaneously, and do you accept stopping any USB recording for this comparison?

Look for: Choose only a detail you can confirm.

  • Manufacturer-documented Sony PS-LX5BT / PS-LX3BT Operating Instructions 5-069-872-13(1) ↗Troubleshooting / You hear noises, PDF p2 — Keeping the computer USB cable connected while also using an analogue amplifier can cause noise. Sony suggests disconnecting the computer route for that case.Exact PS-LX5BT, model YY2098C. Regional manual for Americas/Oceania/Asia; not PS-LX310BT. · Source checked 2026-11-09

a1

Stop computer recording

Stop the recording application’s capture before disconnecting its input.

Look for: Perform this one check and observe the actual response.

  • Manufacturer-documented Sony PS-LX5BT / PS-LX3BT Operating Instructions 5-069-872-13(1) ↗Troubleshooting / You hear noises, PDF p2 — Keeping the computer USB cable connected while also using an analogue amplifier can cause noise. Sony suggests disconnecting the computer route for that case.Exact PS-LX5BT, model YY2098C. Regional manual for Americas/Oceania/Asia; not PS-LX310BT. · Source checked 2026-11-09

a2

Disconnect only the external computer USB lead

Disconnect the external USB cable between computer and turntable. Do not access the internal service port or change any mains or ground connection.

Look for: Perform this one check and observe the actual response.

  • Manufacturer-documented Sony PS-LX5BT / PS-LX3BT Operating Instructions 5-069-872-13(1) ↗Troubleshooting / You hear noises, PDF p2 — Keeping the computer USB cable connected while also using an analogue amplifier can cause noise. Sony suggests disconnecting the computer route for that case.Exact PS-LX5BT, model YY2098C. Regional manual for Americas/Oceania/Asia; not PS-LX310BT. · Source checked 2026-11-09

result

Check the actual result

At the same quiet analogue listening level, is the noise reduced?

Look for: Choose only a detail you can confirm.

  • Manufacturer-documented Sony PS-LX5BT / PS-LX3BT Operating Instructions 5-069-872-13(1) ↗Troubleshooting / You hear noises, PDF p2 — Keeping the computer USB cable connected while also using an analogue amplifier can cause noise. Sony suggests disconnecting the computer route for that case.Exact PS-LX5BT, model YY2098C. Regional manual for Americas/Oceania/Asia; not PS-LX310BT. · Source checked 2026-11-09

Possible result

Confirm the unknown detail first

Do not infer a source setting, installed cartridge, connector role, software state or partner capability. Obtain the exact 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 actual observation for support

    Record the exact model, source, input and last observed response. These checks do not diagnose a failed component. No reset, service work or blind update is prescribed.

    next support

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

      Possible result

      Checks completed — keep the observed result

      This records the observation in this particular setup, not a guaranteed cure, physical Audio Review test or measurement.

      steps completed

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

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