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TV tuner won't lock on lower channels (cable) but works fine on some upper channels (53, 56 etc). Is there a firmware fix

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Sorry guys, but vendor says only solution is to exchange the unit for a new one (under warranty, of course).

Posted on Sep 08, 2009

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My son bought this TV and had it hooked up to a cable connection with an HDMI cable and it worked fine. He gave the TV to me and I hooked it up to a basic cable connection with no cable box. It does not...


If your TV has an On-screen Menu you should be able to access your Tuner controls. Run your auto channel scan and you should pick up your "regular channels". You may be able to de-select the odd channels and show only the ones you want to use.

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I have a Philips TV, model HD2717 C101. All channels do not display--Why? It skips quite a few channels on scan, the only to get them is to actually select the channel individually.


Hi are you running it off of an antenna or cable?
Assuming you have a digital tuner and are selecting the proper type of channel search Ie: cable or air it could be that the tv needs a firmware update to the tuner.

I have experienced similar issues with several TV's I had an Olevia 37" HDTV that required a firmware update to get the tuner to properly decode channels.

I also have seen lots of cases were people have cable hooked up without a cable box and receive "mixed" channels.

I currently have Comcast and have 6 TV's hooked up 3 with cable boxes and 3 directly off the line. According to Comcast I should not be getting anything besides "basic" channels without a box but using the digital tuner in the TV's does pickup most of the channels and even some HD channels that are not there using their boxes.

Interestingly enough none of the TV's tuners decode the channels into the same "channel." As an example HGTV on 1 TV shows up as 84.4 but then 86.1 on the second and something like 84.11 on the third.

My recommendation run the auto program again then go through channel by channel and see if anything needs to be manually entered or deleted. I know this is a pain in the **** and takes about 20 minutes per TV but hopefully that will tell you if your TV tuner is relocating the channels to another channel.

Lastly if your tuner is not digital or if the tuner can't be updated you may have to use a secondary tuner such as one in a VCR to get the channels you desire.

This whole Digital Conversion that we have undergone has brought to light for me at least that our government and corporations don't care about the real world impact on the ordinary person.

Sure they made money on reallocating bandwidth and sure tons of new HDTV's and digital products (including digital cable) have been sold but I haven't come across anyone who feels they have benefited from the conversion forced upon us.

Hope this helps sorry about my rant.

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It may be that the tuner is bad. It works in bands and can lose upper bands. If you use a top of set box for cable it may need reset.

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Screen keeps blinking in and out - DVD works but...


if audio is ok, you need to replace the tv tuner. this will enable both the analog and digital icons allowing you to program ur channels and view cable. also firmware update may be necessary.

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Screen just went black


Think your set tuner is bogus. The other tuner that you used should work, but if it is not a cable tuner configured to your system it will not work either via the rf outputs or the audio video outputs. If that cable box works with another set then you have a real head scratcher on your hands.

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If you are using a cable box you will put you TV on chan 3-or 4 and use the box as your tuner. if you don't have a cable box it may be that the cable is at fault. The auto scan looks for any channel signal and will delete unused channels and lock in the received ones. If no channels are there only the strong ones will lock. The tuner in your TV works in bands or groups of channels and if it was a bad tuner the set would still find all the channels in the low / mid or high bands.

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1 Answer

Cnannel scan detects no channels


Kingscott,
Make sure the cable connection from the dish to the tv is
connected to the antenna/cable input and not the digital
input. Turn on the satellite receiver then auto program the
set with the receiver still on. If this fails to lock in channel
3 your suspicion regarding a faulty tuner could be correct.
A good way to check the tuner operation would be to hook
up another product such as a VCR with the rear switch set
for channel 3 and see if you can receive a picture from this
device. If it works the tuner is OK.
You can bypass the tuner by connecting an S-Video cable
and (or) a set of A/V (yellow,red & white) cables from the
output of the satellite receiver to the video 1 input on the tv.
You'll then have to switch the tv source mode to video 1.
Hope this of some help,
Caseybee

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Sanyo ds325390


Intermittent loss of lower frequency channels ie Ch:36, higher channels ok
Dry joints in UHF tuner, resolder the PCB to casing earth connections inside tuner

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Lost channels 2 through 52


I think the low band (Channel 2-6)in your tuner is not working. This could be in the tuner itself or in the band switching circuits. Possibly she deleted the low channels or locked them out. Stargazer

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