What you'll notice
The TV reports no signal on the HDMI input, while the decoder is clearly powered on and responding to its remote.
Why it happens
The wrong TV input is selected, the HDMI cable has failed, the cable is loose at one end, or the decoder's HDMI output has failed.
Nine times in ten this is not a decoder fault, and it is worth ruling out the free causes before booking anyone.
Input selection
Cycle through every HDMI input on the TV, not just the one you think it is on. Modern sets have three or four, labels do not always match the physical ports, and anyone who has plugged in a games console or a laptop may have left things elsewhere.
Reseat both ends
HDMI connectors do not lock, and the weight of the cable works them loose over time — especially behind a wall-mounted TV where the cable hangs from the socket. Push both ends home firmly.
Swap the cable
HDMI cables fail more often than their simplicity suggests, particularly where they have been bent sharply behind furniture. Borrow one from any other device and try it; it is the fastest conclusive test available at home.
Test on another screen
If a known-good cable on a known-good input still gives nothing, connect the decoder to a different TV. Working there means your television's HDMI port has failed; failing there too means the decoder's output has. Either way you now know which device to spend money on, which is exactly the information worth having before anyone quotes you.
How we fix it
We confirm input selection, substitute a known-good cable, and test the decoder on another display — which definitively separates a cable fault from an output failure.
Still not working?
If the checks above haven't restored your hdmi & tv connection, this usually needs a technician. Our TV Wall Mounting service covers exactly this fault — from R520, quoted upfront.