Hisense TV Black Screen With Sound — How to Fix

What Does This Error Mean?

A Hisense TV that has audio but a black screen usually has a backlight failure, an HDMI handshake issue, or a brightness setting at zero. Unplugging the TV for 60 seconds fixes most cases. If you can see a faint dim image when shining a torch at the screen, the backlight has failed and the TV needs hardware service.

Affected Models

Hisense U8K
Hisense U7K
Hisense U6K
Hisense A6K
Hisense R6 Series
Hisense Roku TV

Common Causes

The backlight LEDs have failed — audio runs but the panel produces no light
An HDMI handshake failure between the TV and a connected source dropped the video signal
The Backlight or Brightness setting was accidentally set to zero
A firmware crash put the display into a standby state while leaving audio active
The HDMI Enhanced format setting is incompatible with the connected device

How to Fix It

Unplug the TV from the wall. Hold the physical power button on the TV body for 30 seconds. Wait 60 seconds total, then plug back in.

This drains residual capacitor charge and forces a full hardware reset — the most effective first step.
Check Backlight settings: press Menu or the Settings button, go to Picture → Backlight. Confirm it is not set to 0.

On VIDAA OS: Home → Settings → Picture → Backlight. On Hisense Roku TV: Settings → TV picture settings → Backlight.
Unplug and reseat the HDMI cable at both ends. Try a different HDMI port on the TV.

HDMI handshake failures cause video to drop while audio continues. Reconnecting forces a fresh handshake.
Change the HDMI signal format to Standard: Home → Settings → System → HDMI & CEC → HDMI Format → Standard.

Enhanced HDMI mode can cause a black video signal when the source device does not support HDCP 2.2 fully.
If a dim image is visible with a flashlight, the TV needs a backlight repair or replacement. Contact Hisense support or a local TV repair shop.

Check if your TV is still under warranty — Hisense provides a 1-year warranty on most models and extended coverage on ULED models.

When to Call a Professional

Shine a flashlight at the screen in a dark room at a sharp angle. If you can faintly see the home screen or image, the backlight has failed. Backlight repair requires replacing LED strips inside the panel — a $80 to $150 repair at a TV shop. For older Hisense budget models, compare the repair cost to a replacement.

Frequently Asked Questions

The screen briefly showed an image then went black — what happened?

A brief image followed by a black screen usually means the backlight driver is failing or the HDMI handshake was rejected after a short attempt. Try a power cycle and reseat all HDMI cables. If it happens consistently, the backlight driver board or the backlight strip is failing.

My Hisense ULED has sound but no picture — is the ULED backlighting the issue?

Hisense ULED uses a full-array local dimming backlight system, which has more LED zones than standard TVs. A fault in the backlight driver or one zone can cause total blackout while audio continues. Contact Hisense support — ULED models have better warranty terms than budget A-Series models.

Can I fix a Hisense backlight myself?

Technically yes — LED backlight strips are available online for many Hisense models. However, opening the TV voids the warranty and the repair requires careful handling of the panel. For a TV still under warranty, contact Hisense for a free repair or replacement.