- TVs
- Smart TV
No Signal
Google No signal on Chromecast with Google TV: black TV screen
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
No signal or a black screen with a Chromecast or Google TV Streamer is usually power, the wrong HDMI input or an HDMI or HDCP error. Power it with its own adapter, pick the right input, restart it for a minute and try another HDMI port.
Safety first
Stop and check this first
- Do not open the TV to inspect the HDMI connectors: it holds dangerous voltages even when unplugged. Any internal work is for the authorised service.
- Do not use HDMI splitters to get around an HDCP error; Google suggests connecting straight to the TV and updating firmware.
Safe checks you can perform
- Check power and the HDMI input
- Clear the HDMI or HDCP error
- Follow the LED steps and try another TV
Leave these tasks to a qualified professional
- Do not attempt this professional task: Google support for the streaming device
- Do not attempt this professional task: Authorised TV service centre
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Google support for the streaming device
What they doIf the device gives no picture on any TV after Google's steps, its support team reviews the case, the LED state and the warranty.
They must show youtheir diagnosis based on the model, serial number and the tests you already ran.
In writingthe case number, whether the device is under warranty and the agreed fix.
Authorised TV service centre
What they doIf the Chromecast works on another TV but no HDMI input on yours gives a picture, the TV brand's authorised service checks its inputs and firmware.
They must show youa test of the HDMI inputs with another device and the installed firmware version.
In writingthe HDMI input diagnosis, the proposed repair and its warranty.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Check power and the HDMI input
- Who:
- you, with the TV remote.
- How:
- plug the device into the wall with the cord and adapter from the box and set the TV to its input (HDMI 1, HDMI 2...). If it stays black, unplug the device power cord, not the HDMI cable, wait one minute and plug it back in.
- Result that matters:
- the Chromecast or Google TV Streamer picture appearing.
- If the picture returns:
- the input or the power was the cause.
- If it stays black:
- remove every HDMI device and leave the TV unplugged for 30 minutes, as Google says.
- Evidence to keep:
- the HDMI input used and whether the device was on a USB port or a wall outlet.
Evidence: TV has no signal or only shows a black screen
Clear the HDMI or HDCP error
- Who:
- you, standing behind the TV where the HDMI ports are.
- How:
- for an HDMI error, seat the cable firmly, try another input, use a compatible extension cable and update the app, the device and the TV. For an HDCP error, unplug the device, reboot the TV, AVR or soundbar too, reconnect and, if it persists, connect it straight to the TV.
- Result that matters:
- the error clearing and your content playing.
- If it works direct to the TV:
- the switch, AVR or soundbar is causing the error.
- If the error stays direct and on several inputs:
- update the TV firmware and move to the LED-based steps.
- Evidence to keep:
- the error text (HDMI or HDCP) and the setup that clears it.
Evidence: TV has no signal or only shows a black screen
Follow the LED steps and try another TV
- Who:
- you, watching the device light.
- How:
- with a white or blinking red/orange LED, shut the TV down fully, disconnect the device, turn the TV on, power the device without plugging it into HDMI, wait 30 seconds, plug it in and select its input. If you have another HDMI TV, set it up there.
- Result that matters:
- knowing whether the fault follows the device or stays with the TV.
- If it works on another TV:
- the issue is the first TV or its input.
- If no picture on any TV or no LED at all:
- try another outlet and contact Google.
- Evidence to keep:
- the LED colour and the result on each TV tried.
Evidence: TV has no signal or only shows a black screen
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- TVs
- Brand
- Product type
- Smart TV
Known code variants
- Aviso No hay señal en DuoxMe
- Cable HDMI desconectado
- Chromecast black screen
- Chromecast error HDCP
- Chromecast error HDMI
- Chromecast HDCP error
- Chromecast HDMI error
- Chromecast no signal
- Chromecast pantalla negra
- Chromecast sin señal
- Fermax monitor disconnected
- Google TV Streamer no signal
- Google TV Streamer sin señal
- Hisense no signal
- Hisense no signal HDMI
- Hisense señal débil
- Hisense sin señal
- Hisense TV no hay señal
- Hisense TV no signal
- Hisense TV no signal antenna
- Hisense TV sin señal TDT
- Hisense weak signal
- LG TV no signal
- mensaje no hay señal LG
- Mi TV no signal
- Mi TV sin señal
- Monitor Fermax sin conexión
- No connection
- No hay señal
- No hay señal WiFi
- No Signal
- No signal input
- No signal or weak signal
- No signal warning in DuoxMe app
- Pantalla muestra sin señal
- Samsung TV no signal
- Screen prompts no signal
- Señal débil
- Sin entrada de señal
- Sin señal
- TV has no signal
- Weak Signal
- Xiaomi TV no signal
- Xiaomi TV sin señal
What it means
Google's help page on a TV with no signal or a black screen starts with direct power from the original cord and the correct HDMI input. For Chromecast with Google TV and Google TV Streamer it gives separate steps when an HDMI error or an HDCP error appears, and others by LED colour. Steps change with the model and the TV, and the message alone does not prove that the Chromecast or the TV is faulty.
Warnings and stop conditions
- Higheditorial warning
Do not open the TV to inspect the HDMI connectors: it holds dangerous voltages even when unplugged. Any internal work is for the authorised service.
Evidence: TV has no signal or only shows a black screen
- Loweditorial warning
Do not use HDMI splitters to get around an HDCP error; Google suggests connecting straight to the TV and updating firmware.
Evidence: TV has no signal or only shows a black screen
Symptoms and causes
Probable causes · in order
- Wrong HDMI input or power sourceCommon
Google asks you to set the TV to the exact input the device uses and to power it directly with the cord and adapter that came with it.
Evidence: TV has no signal or only shows a black screen
- HDCP error from a device in betweenPossible
For an HDCP error Google advises rebooting everything and, if it persists, removing the HDMI switch, AVR or soundbar and connecting straight to the TV.
Evidence: TV has no signal or only shows a black screen
- Extension cable or firmware not suitablePossible
For an HDMI error the extension cable must support 4K and HDMI 2.0 on Chromecast with Google TV or HDMI 2.1 on Google TV Streamer, with current firmware.
Evidence: TV has no signal or only shows a black screen
Virtual technician
Does No Signal still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
TV has no signal or only shows a black screen
Google · 2026 · official_doc
- 2
La televisión no tiene señal o solo muestra una pantalla en negro
Google · 2026 · official_doc
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