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Problem with HDMI1 on Panasonic L32G10B


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Old 03-08-2011, 16:36
wowbagger53
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I've had my L32G10B for a couple of years and have been delighted with it. I use it with both Freeview and Freesat. I just bought a Panasonic Blu-ray home theatre thingy, and it works well. But... I noticed that I lost a few Freeview channels -- the ones on a lower signal strength mux. I thought I'd partially dislodged a cable, and spent hours today trying to find the problem. Finally I figured it out. Unplug from HDMI-1 and Yesterday channel is fine. Plug it back in and 'No signal'.

I then discovered that if I plug the Blu-ray into HDMI-2 it all works fine. In fact, if there is anything (like my laptop)presenting a signal to HDMI-1, then I lose some Freeview channels.

So... is this a design problem or is there a fault on my telly? Anyone got a similar setup to test?
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Old 03-08-2011, 20:17
niall campbell
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this is certainly unusual

I have the G 20 series and does it not auto switch to HDMI 1 ?

is the aerial plugged straight into the TV or the home theatre thingy ?
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Old 03-08-2011, 20:31
wowbagger53
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The Blu-ray/Home theatre talks Viera link over the HDMI. When the TV is in TV mode, the home theatre acts as the TV's sound system, there's video output from the home theatre at the same time -- mostly showing what its signal source is. Similarly, plugging a computer in to HDMI1 *does* make the TV switch to that input, but if you switch back to TV mode the problem as described is apparent.

I'd suspect that there's some kind of crosstalk from HDMI 1
that's decreasing the s/n of the freeview RF, but that's guesswork.

The aerial is plugged straight into the TV. The affected channels have signal quality 6-ish.
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Old 04-08-2011, 23:59
niall campbell
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the only thing I can think of is getting a ' screened ' RF cable

or the HDMI cable

my cable has to plug straight in as yours or I lose some signal , havent tried the HDMI though
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Old 05-08-2011, 00:29
John Currie
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HDMI cables have been known to radiate and block certain muxes...both cheap and expensive types.
I'd suggest you try another.
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Old 05-08-2011, 16:23
wowbagger53
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Ok, so the RF cable is coax, thus screened. I've tried a different HDMI cable to no effect. In any case, if it were the cable I'd expect if to be the same whichever HDMI socket it were plugged into. As it is, it works fine in HDMI 2 but not in HDMI 1, which are physically next to each other.
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Old 06-08-2011, 16:52
niall campbell
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I had to use satellite cable straight from wall plate to TV , even changed the type of wall plate to get my Freeview channels

my G 20 on HDMI 1 will auto change if it detects a signal on it , so its a handy socket.

I use my sky box to watch all my tv , but it had to be right !

it could be the internal wiring and how it operates
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