I have a 52G786 from JVC. I've had it 2 years. Love the set, up until yesterday. I only have a roof antennae (no cable) and I've been using it to receive HD TV out of Green Bay for the past 2 years. Direct connect to ATSC jack. Yesterday it stopped working. No channels come in at all. I know the antennae and cable are fine (tested with a smaller TV with ATSC tuner).
It is possible for these ATSC tuners to just up and die?
Thanks in advance for any input.
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Re: 52G786 ATSC Tuner no longer works
I have the same exact model tv...Love it...ATSC tuners is in definition an Analog tuner. As the broadcasting companies change over to Digital broadcasting before the deadline in Febuary 2009 more and more local or Non-Digital chanels are becoming obsolete. You would have to purchase a converter box for your tv if your not planning on getting cable. Another way to gois if you have an old cable line running through you house (no incomming cable) plug you tv into that jack. That also acts as a antenna. The sweet part of all this is that your tv do have a QAM tuner or Digital tuner built in just need that digital antenna to pair it up.
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I presume you have no sound via the a/v inputs as well as cable or coax input.
We do factory work for many brands including JVC.
I remember one of these sets only a few months old with no audio, JVC exchanged it as the customer was angry (understandable). Ten minutes later we get a email and a call from JVC telling us set has been exchanged and they do NOT want the old one back---do whatever we want with it.
I had tested the set, following the audio circuit to a single board that supplies all audio--board was not real easy to get at and was on "backorder" meaning lots of them were bad and JVC was out.(which is why the set got exchanged).
I had the board ordered and about ten days later the replacement arrived--installed it (it was sandwiched between two other boards) and set worked perfectly===we ended up with a nearly new set (board wholesaled for about 80 dollars) and sold the set used with an extended warranty.
My point is if no audio from tuner or rear inputs it is a shop repair as most shops will not tackle this problem in this set IN THE HOME..
If you have audio from ANY input it may not be the set.
Let me know if you have questions, I am here to help you.
If you're in the US, you will no longer get antenna signals because the US has recently switched to digital. The TV you have does not have a digital tuner and you'll need to purchase a digital converter box that converts a band of analog signal to digital.
As of 6/12/09, the over-air broadcast signals went to digital (ATSC) only. Your set does not have and ATSC tuner so it can not receive the new digital signals. The converter box converts the ATSC signals to the NTSC channel 3 or 4.
The freezing of the picture denotes a loss of signal on a digital (Having a ATSC tuner) TV. If your TV is not digital (Having a ATSC tuner) then it is the device that you have connected to the TV (Cable Set-top Box, DTV Tuner, etc). In the likelihood that it is your TV I would suggest getting a better antenna first if that does not fix the problem you may have a tuner problem. However lets not look at it that way first. What we need to do is to determine if it is the TV of whatever you have connected to the TV.
First unhook the connection you have from the cable to your F connector of the TV (you should see snow or a blank screen) connect a antenna to the F connector of the TV, do you see a snowy picture or a clear sharp picture (snowy= NTSC tuner, clear-sharp= ATSC tuner). If the tuner is NTSC then check you cable device and the connection between your TV and the device and the cabling between the device and the wall. If the Tuner is ATSC then you will have to check all of your connections, and finally if the tuner is bad it has to be replaced by a qualified Tv repair shop.
Do you have your TV plugged directly into the wall? You cannot plug into a power strip, it needs its own direct power source. Also, I have heard that there can be electrical problems inside. I have this same model, I love it, picture and sound. I just replaced the bulb for the first time last night. It was a little premature to replace it now but I know what caused it. I bought a new bulb and it works like a gem. If you ever need to change the bulb do it yourself. It takes maybe 2 minutes. The bulb looks like the Flux Copassitor and all you do is remove the door in the back on the side. Unscrew the the 2 screws that hold the bulb in and just pull out. When you put the new one in make sure you do NOT touch the glass on the new lamp. Just slid it in and screw the 2 screws back in and make sure the door is closed and tight. My uncle had a service guy do his and he got raked for 5-$600, The bulb costs about $200. Should last about 5-6 years at a rate of 5-6 hours of TV on time. Hope this helped. If not, sorry, but at least you know how to change the bulb. Good Luck!!!
If your set does not have an ATSC tuner, for HD, then you need to be using a suitably equipped STB.
Your satellite STB - box - should take in OTA channels and display them as part of its normal operation, tho. It takes in the antenna signal from your roof antenna and displays the HD version of your OTA channels, if it is an HD STB, along with the HD channels it gets from the satellite overhead.
This television has an extremely weak tuner. It is very sensitive to both ghosting (multipath) and weak signal conditions, which cause it's digital decoder to "error out". Coupled with this is the decoder's long set-up time (time to actually begin a decoded video stream after signal is selected)and you find that every time the decoder loses sync it takes several seconds to reestablish normal decoding. The net result is the possiblity that the tuner will be continually restarting and never display anything. An extremely directional antenna may help. Otherwise, find a good external tuner box and use that.