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TV changes channels/volume/source by itself

Hi,
Our LCD TV will sporadically changes channels, volume, source by itself. It can't be turned off using the power button, so we would just unplug the TV and plug it back on when this happens. We have eliminated the remote control as the cause of the problem and we think it might be infrared emission from the laptop, but the problem still persists after we turn off the infrared function on the computer. Is there a way to fix the problem? Thanks!

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  • Televison & ... Master
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Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go. http://electronicshelponline.blogspot.com/ Before replacing it, try a reset to this set, and then check.
There are two methods to reset 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 is 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.

Posted on Jun 16, 2017

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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Posted on Jan 02, 2017

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tvtek
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SOURCE: TV Volume turns down by itself - Philips 29PT8319 Matchline 27"

Most likely the volume down button on the front of the TV or the switch that it activates is sticking. Should be an easy fix otherwise.

Posted on Feb 05, 2007

TVtechmaniac
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SOURCE: FPA lock settings, No remote, can not power on TV

If you forget your password you can reset it. Make sure the TV is off. Simultaneously press and hold VOL< on the TV?s front panel and CLEAR on the remote for approximately 5 seconds. Enter a new password next time you access the PARENTAL CONTROL menu. Front Panel Lock 1. From the PARENTAL CONTROL menu, press the up or down arrow to highlight Lock Fr. Panel. 2. Press the right or left arrow to turn on (box has check mark) or off (box doesn?t have check mark) front panel lock. Of course if you don't have a remote that can bring up the menu I don't know how this can be done.

Posted on Sep 13, 2007

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SOURCE: remote control problems

Feed cable signal directly to tv(no BOX) activate auto-program for channel memory.

Posted on Oct 02, 2007

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SOURCE: Volume stuck maxed out

the intrenal switch that controls the volume up is shorted. you need to have it replaced. the short of the switch doesn't allow any other buttons on the set to work because the micro is recieving the volume up command. it's as if there is an invisible finger pushing the volume up button. the switch is a tachtile switch which is very inexpencive to repair about $50.00 total. if you want to do the repair yourself be aware there are voltages that remain in the set that can be harmful. 50% of the time the cause of these switches shorting is improper screen cleaning. some people spray glass cleaner directly on the screen, this is bad. the cleaner drips into the set and lands on the PC board where the buttons are housed. but I've seen the other 50% also which is hummidity, dust(not anyones fault this just happens), and simple switch failure. so becareful repairing it your self

Posted on Feb 10, 2008

jingjao
  • 252 Answers

SOURCE: Prima Tv problems

some of the tact switch of your tv are defective,or stock ,if you know how to solder, change all switches but be carefull of short circuit

Posted on Oct 14, 2008

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You have to turn up the volume to 38+ in order to hear the TV, when you use to be able to hear it at 10, is there a control board that goes out and what Is the name of it?


Hi Geoff, I hope I can help you with this. If you are using an accessory device (DVD, DVR) check cables to see that they are secure and if device has audio out option that it is set correctly. Also check to see that Video and Audio cables are connected to matching inputs on your set.
If you are using DVI to HDMI you will need to use a separate digital audio cable. DVI cables do not carry audio signal. After attaching the audio cable if you still do not hear sound you may need to set Digital Audio In. To do so:
  1. Press Menu Button on remote.
  2. Press the cursor ring down to highlight SETUP.
  3. Press the cursor ring left to enter SETUP menu.
  4. Press the cursor ring down to highlight SOURCE.
  5. Press the cursor ring left to enter SOURCE menu.
  6. Press the cursor ring down to highlight DIGITAL AUDIO IN.
  7. Press the cursor ring down to select the source you want to associate Digital Audio with. HDMI 1 or HDMI 2 in this case. You might need a software update also.
    The latest software solves the issues below:
    1. TV (Plasma 42" and 50") will not turn ON/shut off itself and Red LED blinks 4- times. Recover if main switch on/off.
    2. 37" LCD full white screen appear when upgrade software.
    3. Some channels not available after turn ON.
    4. Delta volume changes, not remembered.
    5. Preferred channel changes, not remembered.
    6. Green or yellow static (sometime snowy) on HDMI picture.
    7. Picture and sound loss for 5 to 10 sec (green LED is still ON) and back to normal.
    8. Audio loss in all inputs and can be recovered when main switch ON and OFF.
    9. TV set turn ON by itself/ green LED light up and goes off when set is ON.
    10. Intermittent audio loss in NTSC RF channel.
    11. Crack sound with high input signal.
    12. Include the possibility to download the rating table (RRT5 capability) for digital programs.
    13. No video/ no picture with sound.
    14. Intermittent On-Screen Menu pop up by itself and can be removed by pressing the 'MENU' button.
    15. Channel information display too long.
    16. Improvement on scramble channel.
    How to check the current software version on my TV set?
    1. Press 'MENU' button on remote control to display the on-screen menu.
    2. Select TV MENU and press the cursor right.
    3. Select INSTALLATION and press the cursor right.
    4. Select SOFTWARE UPGRADE and press cursor right.
    5. Select CURRENT SOFTWARE INFO to display the current software version on your TV set.
    6. If the TV software version is lower than the version posted on the website means your TV set needs to be upgraded.
    7. Follow the instruction in the user manual or Firmware Upgrade Readme file on how to upgrade your software.
    Where can I find the latest software for my TV set?
    The Firmware Upgrade Software and Readme File documents can be found on the Philips support website. Refer to the SOFTWARE section.

Feb 04, 2016 | Televison & Video

1 Answer

Sceptre TV unexpectedly changes input source away from HDMI


My sceptre tv just started randomly changing through input modes, sometimes once or twice before stopping and sometimes it continues

Jun 30, 2012 | Sceptre X405BV-FHD3 40 in. LCD HDTV

1 Answer

My TV changes channels or source by itself. I


This may or may not be your solution.

The tact switches (push buttons) mounted on the circuit board may need to be replaced (old, worn, sticking). These are the buttons that are pressed in when you use the controls on the television set (volume, menu, channels etc.). Try removing all of these switches (don't remove the remote sensor). Don't remove just the channel switches.

If you have a remote than you don't 'have' to replace them, only if you want to control the tv from the set itself. After you remove them see if you have the same issue. If so you may need a new control IC chip.

A repair shop will charge about $75 to replace the buttons. If you have the tools and knowledge than feel free to do it yourself. To remove mine, I just used pliers and was careful. However to replace them you will need a soldering iron.

Mar 02, 2010 | Norcent Technologies LT-2722 27 in. LCD...

1 Answer

Impossible to change channels, turn TV on, Power and Opc blinking


go into programming mode and search for channels   it will do this automatically to find all antennae and all cable channels    if this is hooked up to a receiver box then only channel 3 will be found or used    also most tvs are computerized these days and at times it will need to 'rebooted'     unplug the power and wait 10 seconds and plug it in again    this may have to be done whenever you are locked out from changing channels or using the volume controls

Nov 05, 2009 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

2 Answers

I need to re tune my samsung tv but have no remote any ideas?


you can always use the button on your Tv itself.

ie menu = Menu
Channel up/down = take you up and down
volume = goes left and right.

follow these steps

Menu,
channel down button to CHANNEL
press the volume button along
channel down button to AUTO STORE
press the volume button to Start the scan.

right now you have your telly tuned in. What you could do it get an old sky remote off a friend/ neighbour. or buy from argos etc ( a lot cheaper then getting a replacement samsung one)

press the following buttons on the sky remote to program it to work with your samsung tv.

TV,
RED + SELECT
TV.
0060

try the volume if this works press SELECT to save this code if it doesnt press Tv then try the volume again. repeat this step until the volume works your telly. once it doest dont forget to press the SELECT button to save.

Now you will be able to change your volume use the number keys. if you also press the HELP button on the sky remote this will also change your AV / SOURCE I hope this post helps you out. When it does please leave a thumbs up for me Please

Cheers Little Dish Fitter

Sep 21, 2009 | Samsung LN-S3251D 32 in. LCD HDTV

1 Answer

Mintex 37 inch wide screen. remote is working however cannot change channel, input source or volum. only turns tv off. The buttone on tv doesnot work connot change input source or volume


Check if the remote is in TV position, that is, because most of the remote controllers have the feature that you can program them for use with another devices. Make shure that one button that says "TV" in pressed and released once before you try to change any function on the TV.

Jun 27, 2008 | Mintek DTV-373-D 37 in. LCD HDTV

1 Answer

Tv switches source channel without warning


Hi Andy.

What is the samsung model number ?

http://dysonmanuals.llc.nu/

Chris...

Dec 31, 2007 | Televison & Video

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