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I just hooked an antenna to my sony bravia and it only picks up a few digital channels. I have two other Tvs hooked to the same antenna and the both pick up so many more channels. What could be the pr

Auto channel scan and directly hooking antenna to tv instead of splitting to other Tvs.

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I think the 'front end fet' or channel fet has failed
this amplifies the incomming antenna signal
however is the center pin of the antenna plug on the tv loose
inside the tv is a metal box this is attached too
it changed the UHF signals to a lower frequency range called an IF
the UHF signals are normaly have a path like this
antenna>>safety >>>amp>>mixeramp>>output to DTV decoder etc

the amp bit or connection to the tv is wrong
as its working quite well and gets like 2 channels

look inside the socket on the tv and examine it carefully for any bits of wire
or as i say loose connections
may just need to be soldered inside the can to reconnect the center pin

it will still give like 2 3 channels as the gap caused by the bad solder joint
will still allow some RF accross
so... its either a gubbed UHF RF amp or a broken connection or a short ... so...

Posted on Dec 11, 2014

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