What you'll notice
One coherent block of channels has vanished from every TV in the property while everything else continues to work normally.
Why it happens
A failed DiSEqC switch. Where a system receives more than one satellite, that switch selects between them — and when it fails you lose exactly the channels carried on the satellite you can no longer reach.
Losing one coherent group of channels — across every TV, all at once, with everything else fine — is close to a signature for DiSEqC failure.
What a DiSEqC switch does
Some installations receive two or more satellites, either for extra channels or for a secondary platform. A single cable cannot carry both simultaneously, so a DiSEqC switch selects between them on command from the decoder. When it fails, one input is effectively disconnected and every channel from that satellite disappears together.
Why it is so easy to misread
Customers naturally describe it as "some channels are gone", which sounds like a subscription change. The distinguishing detail is that the missing channels form a coherent group and the loss is identical on every TV. If both of those are true, look at the switch before phoning about the account.
Why they fail
They are small electronic units, usually mounted outdoors or in a roof space, exposed to heat, damp and surges. They are among the less robust components in a satellite system and they fail without warning.
The fix
Replacement, then a channel re-scan so the decoder re-learns what it can now see. Straightforward once identified — and we fit the replacement somewhere better protected than wherever the last one died.
How we fix it
We test the switch and its control signalling, then replace it and re-run the channel scan. The symptom is so specific that diagnosis is usually quick.
Still not working?
If the checks above haven't restored your signal distribution & amplifiers, this usually needs a technician. Our Commercial DStv Installation service covers exactly this fault — from R2 200, quoted upfront.