Why do I get intermittent and seemingly random interference with my analogue tv aerial in the UK?

Question

When watching tv, my picture goes fuzzy after a while, on all channels. I currently have terrestrial tv, but the same used to interfere with my digibox, rendering most channels unobtainable.

To fix the problem, all I do is unplug the aerial lead either at the tv or the wall, and plug it in again - bingo, clear picture. Then a few minutes later the interference occurs again, and I have to get up again and repeat. Sometimes, just to be unpredictable, the picture clears again without me doing anything.

Any pearls of wisdom on this annoyance greatly appreciated!

Answer 1

Sounds like the RF modulator in your TV could be going.  Or you may need an amplifier for you ariel.

Answer 2

agc control in your tv is faulty

the cable is broken internally [not likely]

an aircraft has flown over? [not likely either]

a tree has grown in direct path with your aerial's line of sight to the transmitter and is blowing in the breeze [a possability]

try the aerial in a different tv set

what sometimes happens is rainwater runs down the inside of the coaxial cable and runs into the tuner of the tv causing faults - though you mentioned you had a wall socket  - but its worth a look to see if there is corrosion at the wallsocket plate