📺Television

E05

TCL · 4-Series S446 4K

TCL 4-Series S446 4K E05 Error Fix: Power Supply Voltage Error

The TV detects abnormal voltage levels in the power supply unit, which can cause instability or failure to power on. This error is triggered by faulty capacitors, transformers, or power board failure.

critical2 fixes available

Quick Answer

Error E05 on the TCL 4-Series S446 4K means: Power Supply Voltage Error. The top-ranked community fix is “Replace Power Supply Board” (hard difficulty, ~60 min, DIY cost: $50-$80). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · tv

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

Root Cause Analysis

Electrical FaultPrimary

Motor Failure → Capacitor Failed

Electrical Fault → Power Supply Fault

When to Call a Professional

While many tv repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $180-$250.

Other TCL Models with Error E05

5-Series S546 QLED

tv · 2 fixes

6-Series R655 Mini-LED

tv · 2 fixes

Alto 8+ 2.1 Channel Soundbar with Wireless Subwoofer and Bluetooth Connectivity

soundbar · 2 fixes

Q-Series Q6510 QLED

tv · 2 fixes

Other TCL 4-Series S446 4K Error Codes

E01

Panel Backlight Failure

2 fixes

E02

Wi-Fi Module Not Detected

HDMI Port Failure

T-Con Board Error

IR Remote Sensor Fault

2 fixes

E07

Audio Amplifier Failure

2 fixes

E08

Over Temperature Protection Triggered

2 fixes

E09

Firmware Corruption Detected

2 fixes

People Also Ask About TCL 4-Series S446 4K Error E05

What does error code E05 mean on a TCL 4-Series S446 4K?

Error code E05 on the TCL 4-Series S446 4K means: Power Supply Voltage Error. The TV detects abnormal voltage levels in the power supply unit, which can cause instability or failure to power on. This error is triggered by faulty capacitors, transformers, or power board failure.

How do I fix error code E05 on my TCL 4-Series S446 4K?

The most successful fix is "Replace Power Supply Board" (hard difficulty, ~60 minutes). Estimated DIY cost: $50-$80. HomeMD has 2 community-ranked fixes for this error.

Is error code E05 on a TCL 4-Series S446 4K serious?

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix TCL 4-Series S446 4K error E05 myself?

Yes — the top-ranked community fix ("Replace Power Supply Board") is rated hard difficulty and takes about 60 minutes. Tools needed: Phillips screwdriver, Multimeter, ESD wrist strap.

How much does it cost to repair TCL 4-Series S446 4K error E05?

DIY cost: $50-$80. Professional repair typically costs $180-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the TCL 4-Series S446 4K have?

The TCL 4-Series S446 4K has 8 other known error codes, including: E01 (Panel Backlight Failure), E02 (Wi-Fi Module Not Detected), E03 (HDMI Port Failure), E04 (T-Con Board Error), E06 (IR Remote Sensor Fault), and 3 more.

Which other TCL models have the E05 error?

Error code E05 also appears on 4 other TCL models: 5-Series S546 QLED, 6-Series R655 Mini-LED, Alto 8+ 2.1 Channel Soundbar with Wireless Subwoofer and Bluetooth Connectivity, Q-Series Q6510 QLED. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the TCL 4-Series S446 4K have?

The TCL 4-Series S446 4K has 8 other known error codes:

E01 — Panel Backlight Failure (2 fixes)
E02 — Wi-Fi Module Not Detected (2 fixes)
E03 — HDMI Port Failure (2 fixes)
E04 — T-Con Board Error (2 fixes)
E06 — IR Remote Sensor Fault (2 fixes)
E07 — Audio Amplifier Failure (2 fixes)
E08 — Over Temperature Protection Triggered (2 fixes)
E09 — Firmware Corruption Detected (2 fixes)

Which other TCL models have the E05 error?

Error code E05 also appears on 4 other TCL models:

5-Series S546 QLED (tv) · 2 fixes
6-Series R655 Mini-LED (tv) · 2 fixes
Alto 8+ 2.1 Channel Soundbar with Wireless Subwoofer and Bluetooth Connectivity (soundbar) · 2 fixes
Q-Series Q6510 QLED (tv) · 2 fixes

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