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Loses channels when power turned off

The tv loses all its channels when the power is turned off so every time i switch it back on it says no signal but when i retune it it works fine and finds all the channels

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Main system control memory IC fault. Replace it. contact any service technician. 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/
After the IC replacement, a memory initilization might be done.

Posted on Nov 22, 2014

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Posted on Jan 02, 2017

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SOURCE: TV freezes when switching to a digital channel

The problem your describing can be contributed to your cable box. Depending on your cable company there are times when the box has trouble translating the signal to the tv. You tv is operating normally. Suggest to the cable company to switch your box.

Posted on Dec 07, 2008

SkyGuy08
  • 27 Answers

SOURCE: Sky remote wont control on/off , volume, or terrestrial channels

Press tv on the Sky remote

press and hold select and red until the led blinks twice
type in 0 0 6 0
press the power button, if the tv turns off then the press select and the remote should work all the tv functions.

If the tv does not turn off then press tv then the power button and keep doing this until the tv turns off, once it turns off press select and it should work.

If you have any problems let me know

Dazz

Posted on Apr 04, 2009

57 varieties
  • 1653 Answers

SOURCE: samsung le26r74bd won't retune digital channels

Updating the Channel List Automatically You can update the channel list when the broadcaster adds new Services or if you move the TV to a new location.

1. Press the MENU button to display the menu. Press the ▲ or ▼ button to select "Digital Menu", then press the ENTER button.

2. Press the ▲ or ▼ button to select "Channel", then press the ENTER button.

3. Press the ENTER button again, to select "Country".

4. Select the appropriate country by pressing the ▲ or ▼ button. Press the ENTER button to confirm your choice. Even though you have changed the country setting in this menu, the country setting for Analogue TV is not changed. (Refer to page 11 of the user guide)

5. Press the ▲ or ▼ button again, to select "Auto Store". Press the ENTER button. When it has finished, the number of scanned services will be displayed. The existing favourite channel list will not be deleted when the channel list is updated. To stop the scan before it has finished, press the ENTER button with "STOP" selected.

6. Press the EXIT button to exit. If the signal status is poor, the "No Service found! Check the aerial connection" message is displayed. Check the aerial connection and the try the procedure again

Posted on Oct 02, 2009

  • 6 Answers

SOURCE: no digital yet tried to retune but greyed out.

Just got through to Samsung support. Turns out the freeview card had frozen and needed a reset. To do this put tv on standby. then press in serries these buttons on the remote: 'info' 'menu' 'mute' 'power' TV will then turn on with a default screen. Press 'arrow down' button untill you reach option 12 'reset' . then push the 'right arrow' and tv will reset and start in plug and play mode and commence a scan when you've set the time. Just retuned mine and its back to normal. Hoorah!!! :-)

Posted on Oct 05, 2009

  • 1 Answer

SOURCE: TV Cable card slot loses signal immediately after channel find

THis is not a solution but a similiar issue. I have had a scientific Atlantia Cable card with comcast for 3 years no problems at all. Spent the entire day trying to switch to Verizon today. The signal comes across for about 10 seconds, pixelates and then fails. This happen after every start. We have checked the lines, tried 2 cards and reduce the signal. We gave up for today- installed the old Scientic Atlantic, reassigned it to comcast and all works fine Any and ALL suggestions are most welcome Thanks

Posted on Jan 15, 2010

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Ive retuned, re-set, unpluggest and plugged back in and i recieve no channeks still, been like this for months


What is your TV source? The Polaroid LCD-2000 only has a NTSC (analog) tuner. Most OTA stations switched to ATSC signals a few years ago and a converter box is required to watch the TV. (A few low power TV stations still broadcast in NTSC but you need to be fairly close to the transmitter to receive the channel.) If you have cable, check if they have migrated to digital cable (QAM for unencrypted channels). If that is the case, you'll need a cable box.

With a digital-to-analog OTA converter box, you can still lose station reception due to the signal strength cliff. Depending on your area, you may need an external antenna or to check the direction of the antenna. I know I have to rotate the outdoor antenna every so often. It shifts in high wind. Even if the antenna only moves 5 degrees, we will lose the signal for half of the stations.

I hope this helps.

Cindy Wells

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1 Answer

My Technika TV model X22/14C-GW-TCD-UK loses all of its channels when I turn it off. I have to retune everytime I turn the TV back on, Any Ideas welcome, many thanks


All sets use a eprom in some form or another that stores the memory of what up/down channels are programmed into the memory of the set-I will presume no box is used in line with this set for signal---very rare for this problem to even happen---next try when turn on to direct enter a known channel and see if set goes there--then manually add it in the menu---if set does not lose that memory at worst you can manually add every channel one at a time.

Oct 30, 2012 | Televison & Video

2 Answers

TV Cable card slot loses signal immediately after channel find


may be tv main board problem ..if you can switch  cable HD  box you can  save money     

Jan 08, 2010 | Sony BRAVIA KDL-V32XBR1 32 in. LCD HDTV

1 Answer

Sky remote wont control on/off , volume, or terrestrial channels


Press tv on the Sky remote

press and hold select and red until the led blinks twice
type in 0 0 6 0
press the power button, if the tv turns off then the press select and the remote should work all the tv functions.

If the tv does not turn off then press tv then the power button and keep doing this until the tv turns off, once it turns off press select and it should work.

If you have any problems let me know

Dazz

Feb 15, 2009 | Samsung LW20M21C 20 in. LCD Television

1 Answer

TV freezes when switching to a digital channel


The problem your describing can be contributed to your cable box. Depending on your cable company there are times when the box has trouble translating the signal to the tv. You tv is operating normally. Suggest to the cable company to switch your box.

Dec 05, 2008 | LG 32LG40 32 in. LCD HDTV

1 Answer

Time TV


By saying that volume and picture controls work, do you mean you can access the TV's onscreen menu? If so, you may need to re-scan for available channels if you are using the TV's internal tuner. If the memory of those channels has been lost, the TV does not know where to "look" for a signal. You may also need to perform a power drain:

1. Unplug the product's power cable so that the device is not grounded to the house. Do not simply turn off the power-bar if one is in use.
2. Press and hold in the products power button for 1 minute to release the retained electricity from the capacitors and circuit board.
3. Plug the product back into the wall outlet rather than a power-bar to rule it out of contributing to the problem and turn the device back on. After this step, try the channel scan again if it didn't resolve the issue the first time.

Oct 16, 2008 | Televison & Video

1 Answer

36 inch RCA tv loses picture and sound, but power stays on


Cable Looses signal power after 20m ... Install signal amplifier
https://youtu.be/AkiKf4G4UE0

May 04, 2017 | RCA 36V430T 36" TV

1 Answer

Sony Tuner KV-20TS27 loses signal


Hi,

Either that of your tuner block is acting up. Most Sonys of this production year uses a tuner block that requires 33VDC tuning supply. It has been known for this zener to fail or the capacitor parallel to it. At times, it could just be the tuner block itself.

Should you venture a DIY, it would be to your advantage to have access to a service manual or at the very least a schematic diagram with voltage readings.. It further requires familiarity with electronic components and circuitry, use of a DVM and a soldering iron. Should you be uncomfortable going this route, then perhaps your best bet would be to seek the services of a qualified professional

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

May 11, 2008 | Televison & Video

1 Answer

Off air digital signal


What brand of tv is it ? You could have a bad tuner or a change in the voltage supply line feeding the tuner . What type of antenna do you have ? outdoor or rabbit ears ? Also does it retain the channel line up or does it clear them as well ?

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LG LCD HDTV 'NO SIGNAL'


To fix the problem, try turning off the TV and unplugging it from the outlet. Once unplugged, push the power button and hold it down for 1 minute. Then turn the TV back on and rescan for channels.

If the problem persists, contact LG customer service immediately as there is a problem with the memory card. The device is unable to retain scanned channels for immediate feedback.

All LG LCD automatically comes with a 1 year manufacturing warranty. You would have to provide proof of purchase to show when it was purchased. Hope this helps. The Guru

LG customer service: http://www.lg.com/us/support/index.jsp

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