What you'll notice
Pixelation across all outlets that got worse rather than better after an amplifier was fitted or adjusted upward.
Why it happens
Amplifier overdrive. Too much gain saturates the decoder tuners, producing break-up that looks exactly like insufficient signal — which tempts the next person to turn it up again.
This is one of the most counter-intuitive faults in satellite work, and one of the most common on systems that someone has tried to improve.
Too much signal is a real problem
Decoder tuners have an input range. Below it, they cannot lock; above it, the front end saturates and the picture breaks up. Both ends of the range produce visually identical pixelation, which is precisely the trap: someone sees break-up, assumes weak signal, turns the amplifier up, and makes it worse. Then turns it up again.
The tell
If break-up appeared or worsened after an amplifier was installed or adjusted, overdrive is the leading suspect. Another clue: outlets closest to the amplifier are worst, while distant ones are relatively fine — the opposite of what a loss problem produces.
Doing it properly
Calculate the loss from head-end to worst outlet. Apply gain that compensates for it and no more. Verify at both the nearest and furthest outlets with a meter, because a setting that fixes one end can ruin the other. Where a system needs different levels in different branches, that is what distribution taps are for.
Sometimes the fix is removal
On more than a few callouts, the correct action has been to take the amplifier out entirely. A short run with two splits does not need amplification, and adding it created the only problem the system had.
How we fix it
We measure the actual signal level at the outlets and set gain to match the system's real loss, or remove an amplifier that was never needed in the first place.
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.