Repair TV is continuously scrolling channel search on screen, when I go into menu on screen also scrolling. Front controls on TV not working. Disconnected power over night for reset, batteries removed from remote, did not reset. Looking for which circuit board controls these features.

Hello
There are two types Zenith TVs. One type will have "Menu" button on its front panel and other will not. If your Zenith is the first type, you can programme it without a remote control. If it is the second type, you must have a remote control hanset to programme it.
Programming method
First connect the TVs antenna socket at its back with external antenna or cable.

* With the remote control in hand, press the POWER key to
turn on the Presentation TV.
** Press MENU repeatedly until the Setup menu appears.

*** Using the Up/Down arrow on the remote control, highlight
Auto Program on the screen

**** Press the Right or Left arrow to go to the Auto Program
menu.

***** Using the Up/Down arrow, choose either Cable TV or Off-
Air Antenna on the screen.
****** Press the Right or Left arrow to begin the Channel Search.
******* Press ENTER when the channel search is done.

Note: Auto Program finds channels being received by the TV
tuner
Cable will not work unless you subscribe to a cable service
OK.

Hello
You can autotune your Sony TV without a remote control. Fist connect it to an external antenna or cable whatever may be, to its antenna socket at the back side.

After you have finished connecting your TV, you can use Auto Program to set up your

channels. During Auto Program, the TV will automatically search for available channels and
program receivable channels.

[1] Press POWER button on the TV to turn it on. The Initial Setup screen appears.

[2] Press CH+ button on the remote control or on the TV front panel to start Auto Program, or press CH-- button to exit.

The Initial Setup screen appears each time you turn on the TV until you perform Auto Program.

To perform Auto Program again

1 Press"MENU" button on the front panel of your TV.
2 Press "RIGHT ARROW button to highlight Channel Menu.
2 Press DOWN ARROW BUTTON to highlight CABLE or ANTENNA AND PRESS [+} to select.

4 Press UP arrow or DOWN arrow to highlight On or Off according to how you connected your TV. Press [+] to select.

4 Press F or f to highlight On or Off according to how you connected your TV. Press to
select
5 Press DOWN arrow button to highlight Auto Program. Press [+]to search for channels
6 After Auto Program finishes, press MENU button to exit.
OK

I've had the same issue! This is caused by the control panel telling the TV what to do - does it change channels on its own, too, or turn off or on on its own?

What you need to do (if you've not already done it) is lock the control panel out, which you can do under the LOCK menu.

What may help is running the factory reset on page 54.

Please fallow bellows instruction to retune your TV.
Could you please follow that EEPROM RESET INSTRUCTION OR FIRST TME INSTALLATION.
Also please don’t forget that MENU BUTTON from your remote, it’s not the one in the middle of remote.
There are the other MENU BUTTON in left down bottom side.
Cannot access Digital TV and am asked for a Lock code Key?
If you cannot access the Digital TV option then conduct an EEPROM RESET as mentioned above. If you are prompted to enter a lock code key enter three / four zeros.
Alternatively when prompted to enter the lock code key conduct a FIRST TIME INSTALLATION also mentioned above.
There are two options available. The first option is to conduct a general reset that will reset all user preferences. The second option would be to conduct an EEPROM RESET. An EEPROM RESET would reset all the internal hardware.

Instructions - Please refer to your DMTECH remote control and user manual provided
1. Turn the Television ON ? Button on front of Television / Power button on remote control.
2. Make sure that you are on Analogue television by pressing the TV/DVB-T button until you see PR and the channel number selected in the top right corner of the screen, e.g. PR 1.
3. You must then Press the button labelled Display until a window titled INFORMATION is displayed on the screen.
4. Only when the window titled Information is present can you continue by pressing the digit (1) twice and then pressing the button titled LINE. If you make a mistake then press Display again to remove the window titled INFORMATION and repeat the process. (Display - 1 1 - Line)
5. Once you have successfully completed step four you will notice that a menu appears on the left of the screen. You can then select which option you want, either RESET or an EEPROM RESET using the arrow keys. To execute an instruction please use the RIGHT ARROW KEY and not the ENTER button.
Make sure you have properly conducted a FIRST TIME INSTALLATION and an AUTOMATIC SEARCH. If having done this you can try conducting a manual search in an attempt to force / lock the channel.
This will erase the DVBT tuner memory and reset the interface card. This may resolve poor channel reception, the inability to store channels or even receive certain channels.

Instructions - Please refer to your DMTECH remote control and user manual provided
1. Turn the Television ON and select digital television by pressing the button labelled TV / DVB-T located under the power button on the remote control.
2. On the remote control locate and press the button labelled Menu, found at the extreme bottom left of the remote control.
3. A Menu should now appear displaying options. Scroll down and select the option labelled SETTINGS using the ARROW KEYS and the enter key located in the middle of the remote control. On the next menu you must select INSTALLATION to move on to the next menu.
4. On this last menu scroll down to the last option labelled FIRST TIME INSTALLATION and select it pressing the enter key. You will then be prompted to delete all channels, using the left arrow key to select yes and press enter to execute. The television will reset and prompt you to commence an AUTO SEARCH. Follow these instructions to tune in channels.picture
Digital Television requires much more from existing aerial systems. Having more than one digital TV may reduce signal quality and strength depending on how the aerial system is set up. It is therefore recommended that if you decide to use more than one digital television you use a booster and or at least make sure you are using a digital ready aerial. Using an existing Aerial that is split may reduce signal strength depending on how many times it is split. Please see the diagram below. The best solution when using an existing aerial is to purchase a booster device. Aerial Splitting - Why a booster is recommended. A booster is used to apply a small current that boosts the existing signal. A booster can be purchased from all main TV/HI-FI - consumer electronic product retailers.

Your auto channel search should be in your menu on the TV. Find your menu button on the front of your TV or on the remote.Make sure before you do a auto search you set your TV to cable, that can also be be done through your menu screen. If you can change the channels on the remote and control the volume your remote is already programmed.

With remote, hit MENU, (use up/down arrows) & scroll to SETUP. Hit ENTER & scroll to TV. Hit ENTER & scroll to AUTO CHANNEL SEARCH. Hit ENTER & scroll to CABLE. Hit ENTER & scroll to AUTO. Hit ENTER, wait as it scans (about 5 min). Your done.

1. On the front of the TV press the MENU button to display the MAIN MENU.
   
2. Scroll through the choices using the VOLUME up and down buttons
3. When positioned on the selection you want press the MENU button again.
4. The first SETUP screen displays, asking you to select a language.
5. Scroll to the desired language ENGLISH, FRANCAIS or ESPANOL and once it is highlighted in green press the MENU button to make finale selection.
6. A SETUP screen appears asking if you would like the TV to search for all channel
7. 1. Yes
   2. Skip this step
   3. 0 Exit
8. Complete the SETUP routine or skip any of the steps and return to them later.
   

This information is from the User Guide that came with our set. Good Luck.

Gateway was sued Class action over LCD's and Plasmas they sold over a 2 year period. They resell 3rd party TV's that were very faulty, an immature design.

Here's what I learned about mine, which makes it limp through as a Computer monitor (both DVI and VCA) and halfway functional TV.
You have to connect a DVI source, on the Main Menu for the DVI input there is an option called "Factory Mode". scroll down to it with the CH buttons and select it with the vol button. The scroll to "initialize eprom", select and confirm it. After the "Waitting" words disappear, make sure you have a TV source connected, Then turn the TV off and on, using the hard switch in the back. The TV input should be defaulted to channel 10 or 11 now But you select a TV channel that has no TV signal on it (like channel 1 for example) , the whole TV input side will refuse to let you select it again, and you'll have a blank screen and have to start over.

That takes care of the blank screen thing Now the other problem is parental control is defaulting to "ON" or something, and you can't program channels. With the TV input Main Menu engaged, select "Setup Menu." If you have this problem, then you'll only see 2 options, all the TV input and channel programming options will be missing. You have to select Parental Control, and when it prompts you for a password hit the volume > button 4 times (or just wait for a minute.) This should bring back your TV System and auto prgram/manual search options.

Unfortunately, my TV doesn;t remember these setting very well if I select cable, it does better if I select "AIr". But at least it funtions - kind of. If you switch to your computer input, you probably will have to switch the monitor off and on from the back panel again. Mine always starts up with the menu onscreen. All this might bve less trouble if you have a the remote, I don;t know where mine went after the last move.

Good luck, and hope this helps.

Billy K.

the tac switches have gone bad.this happens from age or sometimes from washing the screen of the set and moisture gets on the.. it is not a big job but it does involve soldering skills

repost
Gateway was sued Class action over LCD's and Plasmas they sold over a 2 year period. They resell 3rd party TV's that were very faulty, an immature design.

Here's what I learned about mine, which makes it limp through as a Computer monitor (both DVI and VCA) and halfway functional TV.
You have to connect a DVI source, on the Main Menu for the DVI input there is an option called "Factory Mode". scroll down to it with the CH buttons and select it with the vol button. The scroll to "initialize eprom", select and confirm it. After the "Waitting" words disappear, make sure you have a TV source connected, Then turn the TV off and on, using the hard switch in the back. The TV input should be defaulted to channel 10 or 11 now But you select a TV channel that has no TV signal on it (like channel 1 for example) , the whole TV input side will refuse to let you select it again, and you'll have a blank screen and have to start over.

That takes care of the blank screen thing Now the other problem is parental control is defaulting to "ON" or something, and you can't program channels. With the TV input Main Menu engaged, select "Setup Menu." If you have this problem, then you'll only see 2 options, all the TV input and channel programming options will be missing. You have to select Parental Control, and when it prompts you for a password hit the volume > button 4 times (or just wait for a minute.) This should bring back your TV System and auto prgram/manual search options.

Unfortunately, my TV doesn;t remember these setting very well if I select cable, it does better if I select "AIr". But at least it funtions - kind of. If you switch to your computer input, you probably will have to switch the monitor off and on from the back panel again. Mine always starts up with the menu onscreen. All this might bve less trouble if you have a the remote, I don;t know where mine went after the last move.

Good luck, and hope this helps.

Billy K.