TV keeps changing channels

Channel change button on the remote or on the side of the TV coule be stuck.

Most of the time it is the front contact switches Dirty clean them with contact cleaner or replace contact buttons on front panel board 29 cents each Call Mats 1-800-628-1118

YOU HAVE BAD BUTTONS ON THE FRONT PANEL THEY ARE STICKING OR ARE SHORTED.

I have had this problem on this same model (F32650) and I discovered that what is happening is that dust and debris are causing the microswitches in the panel to short, therefore the channel starts changing and wont stop or the volume changes etc...
Get some electronic switch cleaner and (with the power off of course!) spray into the crevaces around each button and press each button a few times and then power the unit back on and it should be fine.

In order to get all the channels u have to have the original remote or a universal remote that has a menu button, an enter button, and directional pad (the directional pad cannot control the volume and channels it must be for navigating). push and hold the menu button, the menu will appear then disappear, once it disappears release the button and enter 9876 then press enter. a different menu will appear and it will b three black lines, one at the top of the screen, one in the middle and one at bottom. the middle line has 3 sections the first part is the item number the second part is the description and the last part is the on/off switch using either a 0 or 1. push down on the directional pad until u get to the 00 factory settings 0 and change the 0 to a 1 with the right button on the directional pad. then scroll up to 20 channel lock 0 (i think its 20, it may be like 22 but it is in the twenties for sure) and change the 0 to a 1. then go back down to the 00 factory settings and change the 1 back to 0 then turn the tv off. when u turn the tv back on it will either automatically ask u to auto tune or u will have to go to auto program to program the channels. there are like 80 different menu items, be sure not to mess with any other ones unless u know what ur doing, u could cause ur tv not to function properly or even be able to turn on.

this problem frustrated me greatly and im very happy to help whoever i can with the solution

This function will block out the picture and sound of the selected channel or video input.
It can also be used to keep the TV from being viewed for a scheduled time period that you set.
The code to enter the Locks feature is a four digit secret code number. The factory preset code is 0000.
Use the number buttons to select access code.

Use CURSOR G or H to highlight function and then press the SELECT button.
To change the access code number, select Change Access Code. Enter a new four digit key number you prefer.
Select CHANGE ACCESS CODE to change factory preset code (0000) to your preference.
When ENGAGE LOCK is selected, SET CHANNEL LOCK, SET INPUT LOCK, and SET FRONT PANEL LOCK can be set individually.
When SET CHANNEL LOCK is turned on, the picture and sound for the chosen channel will be blocked out.
When SET INPUT LOCK is turned on, the picture and sound for all video inputs and the picture and sound for channels 3, 4 will be
blocked out.
When FRONT PANEL LOCK is turned on, all buttons on the Front Panel will be deactivated, except the Power button.
When TV TIME LOCK is turned on (r TIME LOCK) you can set the BEGIN and END times (CURSOR E) and the TV
cannot be viewed during that time period (Set clock first). Use CURSOR G or H to highlight ONCE (TV will time out one time
only), DAILY (TV will time out every day), WEEKLY - SUN~WEEKLY - MON (TV will time out one time a week) or OFF (to disable
this function).
When MOVIE RATINGS is selected, you can block various types of movies and video tapes based on motion picture ratings. Picturein-
Picture will also be blocked automatically (see page 45).
When TV RATINGS is selected, various types of television programming based on a parental guide ratings will be blocked.
Picture-in-Picture will also be blocked automatically
If you forget your secret code, use the factory code 7777 to erase your key number. This will reset the secret code number back to the
factory preset 0000.
Press EXIT to quit the menu.

bad solder connections. front control panel.

I would suggest to let the water dry or you can use a hair dryer to blow air through the buttons, you could also open the back cover to blow air towards the front panel to dry it faster.
The spilled water is acting as a conductor, that is why the channels are changing on their own.

Good Luck.

Found this in another forum (www.hometheaterspot.com) and it fixed my remote problem:

"...it's possible that one of the front panel buttons is "stuck" or shorted, and this could cause the TV to ignore commands from the front panel or remote. But this should also cause the Power command to be ignored, too. You might try pulling off the front panel and disconnecting the front panel buttons and then see if the remote works."

the channel down button is stuck on, you need to replace this switch internaly to the set.