- TVs
- TV set-top boxes
SIN-LUZ
DIGI SIN-LUZ on DIGI TV decoder: power indicator light off
Risk level
Low
Usually safe to check without specialist tools.
Urgency
Medium
Quick answer
When the power indicator on a DIGI TV ZTE R2A or R1A decoder shows no light (Sin luz), the set-top box is switched off or getting no power. Check the supplied DC+12 V power adapter at the rear port and wall outlet, press the power switch until the LED turns green, or contact DIGI support.
Safety first
Stop and check this first
- Do not open or attempt to repair the set-top box or its DC+12 V power adapter yourself: improper handling voids DIGI's free maintenance cover for rented equipment.
- When returning equipment or cancelling the rental, include the power supply and cables within the 30-day return window to avoid the 50-euro compensation charge set out in the Specific Terms.
Safe checks you can perform
- Check the DC+12 V power adapter plug at the rear panel and wall socket
- Press the power switch on the front and top panel
- Verify the HDMI or AV cable and network link once the green light appears
Leave these tasks to a qualified professional
- Do not attempt this professional task: Fault registration with DIGI's official customer support
- Do not attempt this professional task: Replacement of the faulty rented decoder and return of the old unit
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.
Fault registration with DIGI's official customer support
What they doIf the ZTE R2A or R1A decoder remains unlit after checking the DC+12 V adapter and the power switch, DIGI's official customer support logs the fault while you are next to the equipment.
They must show youthat both the rear DC+12 V power port and the original power supply were checked.
In writingthe incident ticket number and the instructions provided for the unit.
Replacement of the faulty rented decoder and return of the old unit
What they doWhen the STB or its power adapter is confirmed faulty, DIGI replaces the rented equipment and sends an email with return instructions and a return code for the defective unit.
They must show youthe replacement unit reaching a green indicator light and the email containing the return code.
In writingthe return code and proof of hand-over for the decoder and its power supply.
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 the DC+12 V power adapter plug at the rear panel and wall socket
- Who:
- you.
- How:
- inspect the rear panel of the decoder (port 6 on the ZTE R2A or port 1 on the ZTE R1A) to make sure the DC+12 V power adapter supplied in the box is firmly plugged into both the STB and a working wall outlet.
- Result that matters:
- confirming that electrical power reaches the DC+12 V input of the set-top box.
- If a loose plug was reseated and the indicator lights up:
- proceed with turning on the box.
- If the cable is secure and there is still no light:
- press the physical power switch on the panel.
- Evidence to keep:
- photo of the rear DC+12 V socket on the STB and the connected power adapter.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Guía rápida de usuario Decodificador R2A (DIGI TV) · Guía de usuario e instalación Decodificador R1A (DIGI TV) · Guía rápida de usuario Decodificador R1A v1 (DIGI TV)
Press the power switch on the front and top panel
- Who:
- you.
- How:
- press the power switch on the front and top panel of the set-top box (labelled 1 on the R2A and 2 on the R1A) and wait for the power indicator LED to turn green.
- Result that matters:
- switching the set-top box on from the powered-off state.
- If the LED turns green:
- switch on the TV and check the picture over the HDMI or AV cable.
- If the LED turns red:
- the box has power and is in standby; press the power button again to wake it.
- Evidence to keep:
- short video pressing the panel switch and showing the front power indicator.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Guía rápida de usuario Decodificador R2A (DIGI TV) · Guía de usuario e instalación Decodificador R1A (DIGI TV) · Guía rápida de usuario Decodificador R1A v1 (DIGI TV)
Verify the HDMI or AV cable and network link once the green light appears
- Who:
- you.
- How:
- once the indicator is green, check that the supplied HDMI cable (or the 3.5 mm AV cable if your TV has no HDMI port) is connected to the TV and that the RJ45 Ethernet cable or Wi-Fi connects the STB to your DIGI router.
- Result that matters:
- completing the six startup steps in the quick guide to reach the DIGI TV app.
- If the Google TV home screen appears with DIGI TV in first place:
- setup is complete.
- If the indicator stays completely off on every working wall socket:
- contact DIGI support.
- Evidence to keep:
- photo of the set-top box connected to the television and router.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Guía rápida de usuario Decodificador R2A (DIGI TV) · Preguntas frecuentes sobre DIGI TV (Ayuda DIGI)
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
- Digi
- Product type
- TV set-top boxes
Known code variants
- deco DIGI no enciende luz apagada
- decodificador DIGI sin luz
- DIGI set-top box power light off
- DIGI STB dead no light
- DIGI TV decoder no light
- DIGI TV indicador apagado
- SIN-LUZ
- ZTE R1A indicator off
- ZTE R1A sin luz
- ZTE R2A no LED light
- ZTE R2A sin luz
What it means
In DIGI Spain's official user manuals and quick guides (in Spanish) for the ZTE R2A and ZTE R1A decoders, «Sin luz» (no light) on the power indicator means the set-top box (STB) is powered off, as opposed to red (standby mode) or green (operating). Other decoder models or hardware revisions may differ, and an unlit indicator by itself never proves that the internal board of the decoder is defective.
Warnings and stop conditions
- Mediumeditorial warning
Do not open or attempt to repair the set-top box or its DC+12 V power adapter yourself: improper handling voids DIGI's free maintenance cover for rented equipment.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Condiciones Particulares del Servicio DIGI TV
- Loweditorial warning
When returning equipment or cancelling the rental, include the power supply and cables within the 30-day return window to avoid the 50-euro compensation charge set out in the Specific Terms.
Evidence: Preguntas frecuentes sobre DIGI TV (Ayuda DIGI) · Condiciones Particulares del Servicio DIGI TV
Symptoms and causes
Probable causes · in order
- Decoder power switch left in the off stateCommon
Both the ZTE R2A and ZTE R1A feature a physical power switch on the front and top panel that switches the STB completely off and leaves the power indicator unlit.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Guía rápida de usuario Decodificador R2A (DIGI TV) · Guía de usuario e instalación Decodificador R1A (DIGI TV) · Guía rápida de usuario Decodificador R1A v1 (DIGI TV)
- DC+12 V power adapter unplugged at the rear socket or mains outletCommon
Step 1 of the quick start guide requires plugging the supplied DC+12 V power supply cable into the rear power input (port 6 on the R2A, port 1 on the R1A) and into a live mains socket.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Guía rápida de usuario Decodificador R2A (DIGI TV) · Guía de usuario e instalación Decodificador R1A (DIGI TV) · Guía rápida de usuario Decodificador R1A v1 (DIGI TV)
- Wall socket or power strip without mains voltagePossible
If the wall outlet or extension strip feeding the set-top box power adapter is switched off or unpowered, the front indicator remains completely dark.
Evidence: Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV) · Preguntas frecuentes sobre DIGI TV (Ayuda DIGI)
- Faulty DC+12 V power supply or set-top box hardware faultLess common
If the original DC+12 V adapter is firmly connected and the power switch is pressed but the indicator never lights up, DIGI TV's Specific Terms cover maintenance or replacement for equipment faults.
Evidence: Preguntas frecuentes sobre DIGI TV (Ayuda DIGI) · Condiciones Particulares del Servicio DIGI TV
Virtual technician
Does SIN-LUZ 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
Guía de usuario e instalación Decodificador R2A v1.0 (DIGI TV)
DIGI Spain Telecom · 2025 · official_doc
- 2
Guía rápida de usuario Decodificador R2A (DIGI TV)
DIGI Spain Telecom · 2026 · official_doc
- 3
Guía de usuario e instalación Decodificador R1A (DIGI TV)
DIGI Spain Telecom · 2025 · official_doc
- 4
Guía rápida de usuario Decodificador R1A v1 (DIGI TV)
DIGI Spain Telecom · 2026 · official_doc
- 5
Preguntas frecuentes sobre DIGI TV (Ayuda DIGI)
DIGI Spain Telecom · 2026 · official_doc
- 6
Condiciones Particulares del Servicio DIGI TV
DIGI Spain Telecom · 2026 · official_doc
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