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Can't pick up all the signals

I've had this TV a few months and it has worked fine. I had it hooked up to a Terk bow tie antenna and picked up about 20 digital signals in addition to analog signals. I decided to hook up the Viewsonic to the roof mount antenna that our other TV uses. My husband used a splitter thing and we hooked up the Viewsonic to the roof top antenna. I ran "auto scan" and picked up the same channels as before except now some of the channels had different numbers, like channel 10 was found way over on channel 37. Then yesterday, suddenly I can only get a few channels. I ran the "auto scan" again. I hooked up the old Terk antenna..."auto scan" again. Nothing helped. I called Viewsonic, they had me do the same things I had already done. We reset the TV to factory defaults. Still no good.
Can you help? I did find out there are no "Factory Authorized" repair locations and my only option is to pay for repair myself or send it back to Viewsonic.

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  • Anonymous Mar 15, 2014

    element television

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  • 1,635 Answers

I always tell people to carefuly read their instruction manual and consult the product tech support before determing that there is actualy a fault with their unit.

If sounds like the tuner module or the controler board for the tuner may be failing, or there is a power supply distribution fault to the tuner section and or its controler. This has to be service by the manufacture.

One of the criteria I recommend when people buy an expensive appliance or TV is to make sure that there is local authorized service. I also recommend an extended warrany for expensive items. The warranty is like insurance. You may or may not need to collect!


Jerry G.

Posted on Apr 17, 2008

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How do we set up the tv to pick up air channels with the indoor amplified antenna?



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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


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

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Next what type of antenna or cable (basic, digital) do you have and how is it connected to the TV? Is it an indoor or outdoor antenna and is it pointed at your area stations? See antennaweb.org or tvfool.com for details on where your local OTA stations are. (Note: antennaweb assumes an outdoor antenna but is very conservative in their list.) Antennas can be turned by the wind.

Do you have an amplifier or a splitter in the system?

First, remove the amplifier or splitter and try a direct connection to the TV. (I've had amplified splitters turn into signal filters after they failed. Then they gave no signal out from certain bands. Many areas only have UHF digital stations.)

Next check your cables for damage and try replacing cables. (I recently had a cable in the wall get damaged and had to rewire that outlet. The TV got good signal if I ran a direct line across the floor to another coax jack.) Alternatively, try connecting the TV to a different coax jack.

The final thing to check is the TV's inputs. They can fail. (I lost a few analog TV tuners to a lightning surge.)

I hope this helps.

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Weak or no signal


you would need to know if the tuner is picking up analog signals in the air well( stick a wire a little bit in the tuner connection to see if channels pick up good or use an antenna , if so there should not be a problem with the cable being hooked up to it , if there is a problem even with an antenna then the tuner is bad and will need to be replaced , and the cable could have caused it to go out , but make sure that the tuner is working or not first.

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