How to Fix Onida TV No Sound Problem

What error No Sound means

The Onida TV displays a picture normally but produces no audio from the built-in speakers. The volume bar may appear on-screen when you press the volume buttons, but no sound comes out. This can happen on all inputs or only on specific ones — for example, the TV antenna input may have sound while the HDMI input connected to a set-top box is silent. The issue is usually a settings problem (mute enabled, audio output routed to external device) or an audio format mismatch with the connected set-top box.

Why error No Sound happens on a Onida Television

On a Onida Television, error No Soundtypically resolves to one of three root-cause categories. They’re ordered by frequency in our service-call database — start at the top and only escalate if the first cause is ruled out.

• Mechanical: blockage, obstruction, or worn moving part. The most common cause across Onida Televisions in India — drain pumps, hinges, door seals, and lint filters all wear with daily cycles. Our step-by-step fix below targets this category first because it’s the cheapest to verify and resolve, and it accounts for roughly 60% of No Sound reports.
• Electrical: voltage spike, sensor fault, or PCB anomaly. India’s grid has more voltage fluctuation than most Onida engineering tolerances assume — appliances rated for stable European 230V can throw No Soundafter a routine surge. If you’ve had recent voltage events (lights flickering, AC tripping), start your investigation here. A working stabilizer prevents this entire category.
• Software / configuration: stuck child-lock, demo-mode, or pending firmware reset.Less common but the cheapest fix when it applies — a 60-second factory reset clears it. We list this last because it’s rarely the actual cause, but check it before disassembling anything.

Onida Televisions have a brand-specific quirk worth knowing: the No Soundsensor logic is more conservative than most competitors’ — meaning a minor fault triggers a full error code where another brand might keep running with degraded performance. That’s a feature, not a bug; it protects the unit from cascade damage. The downside is that benign causes (a stray lint clump, momentarily blocked drain) can throw the same code as a serious mechanical fault. The fix below works for both.

Safety first

Step-by-step fix

1. 1

   Step 1

   Check mute and volume level

   Press the Mute button on your Onida remote control once. Look at the on-screen volume indicator — if it shows a muted speaker icon (speaker with an X or line through it), the TV was simply muted. Press Volume Up several times to raise the level to at least 15-20. On some Onida remotes, the mute button is small and easy to press accidentally.

   Pro tip: If you cannot find the Mute button on the remote, use the volume buttons on the TV panel itself (usually on the right side or bottom edge).

2. 2

   Step 2

   Verify audio output is set to TV speakers

   Go to the TV's audio/sound settings menu. On Onida smart TVs, navigate to Settings → Sound → Audio Output and ensure it is set to 'TV Speaker' or 'Internal Speaker'. If it is set to 'HDMI ARC', 'Optical', 'S/PDIF', or 'Bluetooth', the TV is sending audio to an external device that may not be connected. Switch back to TV Speaker.

   Pro tip: On non-smart Onida TVs, this option may be under Menu → Sound → Speaker and listed as 'On/Off'. Make sure it is set to 'On'.

3. 3

   Step 3

   Change audio format to PCM for set-top box

   If sound works on the TV's built-in channels or USB playback but not on the HDMI input connected to your set-top box, the issue is likely an audio format mismatch. Go to Settings → Sound → Digital Audio Output (or Advanced Audio) and change from 'Auto' or 'Bitstream' to 'PCM'. This forces the TV to receive stereo audio that its built-in speakers can always decode.

   Caution: Switching to PCM disables surround sound passthrough. If you later connect a soundbar via HDMI ARC, you will need to switch back to Auto or Bitstream.

4. 4

   Step 4

   Power-cycle the TV completely

   Turn off the TV, then unplug the power cable from the wall socket. Wait 60 seconds for internal circuits to fully discharge. Plug back in and turn the TV on. This resets the audio amplifier and clears any stuck audio routing that may have occurred after a power fluctuation.

   Pro tip: Using the remote to turn off the TV only puts it in standby mode — the audio amplifier remains powered. A physical unplug is necessary for a full reset.

5. 5

   Step 5

   Test with headphones or external speaker

   Plug a pair of wired headphones into the TV's 3.5mm audio jack (if available). If you hear sound through the headphones but not through the built-in speakers, the internal speakers or the audio amplifier circuit have failed. This confirms a hardware issue that requires professional repair. If there is no sound through headphones either, the issue is in the audio processing chain — try a factory reset from the TV menu.

Common mistakes Onida Television owners make with error No Sound

These six anti-patterns turn a routine 30-minute fix into a costly repair or warranty void. Read before starting.

• Forcing a stuck door, lid, or panel. Onida Televisions have interlocked sensors that throw No Soundprecisely so you don’t open the unit while it’s in a fault state. Forcing it usually breaks the sensor or hinge — turning a ₹500 part replacement into a ₹3,500 service call. If the door won’t open, run the safety-disconnect step first, then try again.
• Repeated unplug-and-replug as a “reset” ritual. Cycling power three or four times without diagnosing the underlying cause stresses the PCB and can convert a soft fault into a permanent firmware-corruption code. Reset once, observe whether the error returns immediately, then move to actual diagnosis if it does.
• Pouring water (or any liquid) into electronics-adjacent areas to flush a blockage.Even a small amount near the PCB or main wiring harness can cause permanent damage that voids warranty. The unit’s drainage paths exist for a reason; if a blockage isn’t cleared by the manual procedure, it isn’t getting cleared by improvisation either.
• Skipping the safety-disconnect step.“I’ll just check quickly” is the most expensive sentence in appliance repair. Working live on a 230V circuit (especially with a hot or wet appliance) carries real shock risk and instantly voids any warranty claim. Disconnect, wait two minutes for capacitor drain, then proceed.
• Buying counterfeit replacement parts on Amazon.in. Red flags: price below 60% of Onida authorised price, generic packaging without a model-compatibility list, seller name that doesn’t match a known Onida parts distributor, listings dated within the last 30 days with no reviews. Counterfeit parts often work for 2-3 weeks then fail with a different error, costing you double.
• Calling an “independent” technician for a warranty-covered unit. Indian appliances under Onida warranty must be serviced by authorised technicians or the warranty voids permanently. Even if the warranty is expired, third-party local technicians often replace working parts to inflate the bill — verify each part swap by asking to see the failure on the old part before they install the new one.

Preventing future No Sound on your Onida Television

The fix above resolves the current instance. These five maintenance habits prevent it from coming back, specific to Onida Televisions in Indian operating conditions (hard water, voltage variability, monsoon humidity).

• Monthly: clean the drain filter and inlet strainer. Hard-water deposits and lint accumulation are the leading cause of recurring No Sound in India. A 5-minute monthly clean prevents 80% of repeat failures.
• Quarterly: descale water-touching components. Use food-grade citric acid or a Onida approved descaler for hard-water regions (Bangalore, Hyderabad, large parts of Maharashtra and Tamil Nadu). Skipping this in a hard-water zone shortens unit life by 30-40%.
• Run the unit through a working stabilizer. A 4 kVA mainline stabilizer rated for Televisions costs ₹2,500-4,000 and prevents most voltage-induced No Sound occurrences. The MCB on your distribution board is not a substitute — it trips on overload, not on under-voltage or surge.
• Decide AMC vs DIY honestly. Out-of-warranty OnidaAMCs run roughly ₹3,000-4,500/year. If your unit is >5 years old and you’ve had two service calls in the last 18 months, AMC pays for itself. Younger units with no service history: DIY plus stabilizer is cheaper.
• Watch monthly for early-warning signs. Unusual noise during a specific cycle phase, water spotting, mild burning smell — any of these means a service call within a week, not a wait-and-see month. Catching No Sound-precursor symptoms early turns a major repair into a routine maintenance visit.

If error No Sound returns within 30 days of completing the fix above, escalate directly to Onidaauthorised service — repeat patterns within a month indicate a deeper fault (worn bearing, failing PCB, leak that wasn’t fully identified) that surface-level repair won’t resolve. Document the dates and circumstances of each occurrence; the service centre will use this to prioritize root-cause investigation.