Auto tuner detects no signals

Question 1

2helpful

1answer

Auto tuner detects no signals

D a reset to this set, and check. If it do not help you, the main system control memory IC to this set is faulty, and should he replaced. Contact any service technician. There are two types of reset to TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight; will be better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Dec 04, 2014 • LG 32LC7D Television

11helpful

2answers

My Sony Bravia television froze on a digital picture today and now when I change channels there is no picture and no sound. I tried to do a digital scan and it picked up no digital signals,. The analogue...

Hi,

Your TV has a dual tuner - one for analogue and one for digital although they are contained on the same tuner board. It's possible that the digital tuner has failed, in which case the tuner board will most likely need to be replaced, but often this problem can be resolved with a "hard" reset. Turn the TV off and unplug it. Remove all the cables from the back, leave it for at least 5 minutes and then re-connect only the cable from the tuner source. i.e aerial/antenna. Make sure you are in Digital TV mode (DTV), then run the channel scan again.

If it works turn the TV off, re-connect all of your other devices and you should be able to resume using the TV as normal.

If this doesn't work, you may need to have the digital tuner replaced. The analogue and digital channel feeds are from the same source. As the analogue channels are working there is no obvious fault with the feed or cables.

Please try this first and then post back for further assistance if needed.

Regards,
BElectric

Dec 23, 2010 • Sony BRAVIA KDL-40S2010 40 in. LCD...

0helpful

1answer

Bad/No reception problem on older tube tv worked good yesterday

have your tuner check for any cold solder on pins.

Jul 29, 2009 • Televison & Video

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1answer

No digital signal search

Check your manual to see if it has 2 tuners, digital and analog. If it doesn't have a digital tuner, you will need a converter box.

Jun 02, 2009 • Vizio SV470XVT 47 in. LCD TV

0helpful

1answer

Tuner will not pick up cable box on channel 3, front and rear AV

In order for the TV to work with the cable box by using a piece of coax and tuning the TV to channel 3, you must make sure the TV is in "Cable" mode on the tuner and not "AIR or Antenna" the frequency maps are different between these types of service and channel 3 cable will not be the same as channel 3 on Air or UHF/VHF.

Often there is an auto program feature on TV's that will "scan" for all available channels, and this should select the proper input type.

Hope this helps!

Mar 29, 2009 • Philips Magnavox MS3652S 36" TV

1helpful

1answer

No signal

Check is RF Antena/ Cable connected? If yes, go to TV Menu and select Auto-Program. TV will start tuning and search all available channels on cable/ on-air. If there is no channel reception, TV has defective Tuner. If you know basic electronics knowledge, replace the Tuner or contact nearest Sony repair shop.

Jun 04, 2008 • Sony FD Trinitron WEGA KV-36FV300 36" TV

0helpful

1answer

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

Mar 13, 2008 • LG 42LC2D 42 in. LCD HDTV

1helpful

1answer

Blue Screen

Hello,
I just wanted to suggest some things for you to try, if you have not done them already. Try hooking up a known good signal, such as the main input cable from your cable or dish, hook it straight to your tv, and see if you can change channels, and get a picture on low band...2 thru 6, and then if not, how about any picture above channel 6, if you get picture on 2 thru 13 now, it could be whatever you have hooked in between the input cable and the tv...be sure you have the tv on the right channel for your receiver, usually 3 or 4, or if you are using another type of video input cable, make sure you have tv on the right input for that cable and that cable is good...check the in and out of your component unit, for correct cable hookup as well as your cables, in reference to using RCA video and audio left and right in and out...a lot of sets and vcr's will go to a blue screen if they lose signal to them....I hope this helps you out some.If you cannot get a picture from hooking your signal straight to your tv, it could be the tuner got a spike from a thunderstorm, or has lost the B Plus source for the tuner circuit. Be sure that it is not selected for an input signal,other than the cable or antenna mode, the onscreen text should verify this, if you can change channels with or without getting video...a picture....Good luck with it. T.

Jan 15, 2008 • JVC AV-27S33 27" TV

9helpful

7answers

No channels

i had the same damn problem for 3 long hours but i found a solution i have olevia 32 inch tv (720). all you gotta do is go to menu>setup>tv>auto channel search> cable> standrad search

Sep 21, 2007 • Olevia LT32HVE 32 in. LCD Television

0helpful

3answers

Problem w60 inch using hdtv cable box

i know this problem, happened to me with the comcast Motorola HD receiver box. The key is with the setting in the cable box. Switch on the TV. Set the channel to normal tuner channel 3 or HD input. Turn off the cable HD box. Press the Menu Button on the Cable box or the remote. You should see a Menu. Use the cursor keys to navigate The default setup is also one of the option, Right click on your cursor keys acts like the computer keyboard enter key and applies the change. The default setup is 16:9, the shacking would happen if you have set the picture type to "PAN SCAN". change it to either 16:9 or 4:3 Letter Box. The shacking should stop. Hope it helps.

May 15, 2007 • Philips 60PP9352 60" Rear Projection...

Question 2

The Knight

LG Master 76,851 Answers
Posted on Dec 04, 2014

The Knight

LG Master

Joined: Oct 14, 2010

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Sounds like the main system control memory IC to this device is faulty. It does not store the programs. Contact any service technician to replace it. Electro help

Testimonial: "Thanks very much, I appreciate you're advise."

The Knight Dec 05, 2014

Yes. Thanks very much for your appreciation.

×

Answer 2

Col Dana Gillespie

Expert 167 Answers
Posted on Dec 04, 2014

Col Dana Gillespie

Expert

Joined: Dec 02, 2013

Answers

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1

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You have problems on your Main Board. This board is where all you cable, game connections etc come in. There is a possiblity that you could your input and make it work. I have known that to straighten one out.
Col. Dana Gillespie

Testimonial: "Col Gillespie, I'm sorry, I don't understand your third sentence re my input. Could you please clarify? Thanks"

Col Dana Gillespie Dec 10, 2014

I was reffering to some of the other inputs on your main board where all your video,vcr, etc connections go.

×

Answer 3 · 3/20/2008 12:00:00 AM

A

Anonymous

Posted on Mar 20, 2008

SOURCE: 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

Chi Chu

8457 Answers
Posted on Sep 30, 2009

SOURCE: My daughter pressed the power button on the tv and

Go to menu.Rescan the channels for cable or free air.

Chi Chu

8457 Answers
Posted on Mar 20, 2010

SOURCE: LG 42LB5D-UC cannot find channels when scanning

No,Ur Digital antena not getting a good signal,because of lanscape like hills or big buildings,blocking the signal,that why u not getting good signals,or no signals at all.Buy another name brand digital antena with a stronger signal amplifier.Or buy a digital roof antena,well help or solved these problems.

Testimonial: " "

Anonymous

3 Answers
Posted on Nov 15, 2010

SOURCE: only av input is working LG 42LC7D TV

I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .

Anonymous

1779 Answers
Posted on Dec 24, 2010

SOURCE: TV has lost channel 3-1. Running auto tuning

Un-plug the set fir 10 minutes then run Auto tuning again, let me know.?

Answer 4 · 3/20/2008 12:00:00 AM

A

Anonymous

Posted on Mar 20, 2008

SOURCE: 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

Answer 5 · 9/30/2009 12:00:00 AM

Chi Chu

8457 Answers
Posted on Sep 30, 2009

SOURCE: My daughter pressed the power button on the tv and

Go to menu.Rescan the channels for cable or free air.

Answer 6 · 3/20/2010 12:00:00 AM

Chi Chu

8457 Answers
Posted on Mar 20, 2010

SOURCE: LG 42LB5D-UC cannot find channels when scanning

No,Ur Digital antena not getting a good signal,because of lanscape like hills or big buildings,blocking the signal,that why u not getting good signals,or no signals at all.Buy another name brand digital antena with a stronger signal amplifier.Or buy a digital roof antena,well help or solved these problems.

Testimonial: " "

Answer 7 · 11/15/2010 12:00:00 AM

Anonymous

3 Answers
Posted on Nov 15, 2010

SOURCE: only av input is working LG 42LC7D TV

I may put money that some one did stole your internal cable from the power supply to the main board !

Don't be surprised they did it to me at LG company .

Answer 8 · 12/24/2010 12:00:00 AM

Anonymous

1779 Answers
Posted on Dec 24, 2010

SOURCE: TV has lost channel 3-1. Running auto tuning

Un-plug the set fir 10 minutes then run Auto tuning again, let me know.?

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Auto tuner detects no signals

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