The volume goes down ,then it cycles automatically through channels

It is useful to know on what?
make model (what it is)
in all questions please.

https://www.google.com/search?q=The+volume+goes+down+automatically

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Simple answer to volume problem i have found there is a demo button on the tv which automatically turns everything down.

Hello
Your Toshiba tv can be automatically tuned to all stations. The procedure follows.

Programming channels automatically

Your TV can automatically detect all active channels and store them in

its memory. After the TV has stored the channels in its memory automatically,

you can add or erase channels manually.

To add channels automatically:

1. Press MENU, then press "left arrow" or "right arrow" button to display the SETUP menu.

2. Press "Up arrow"or "down arrow" until the TV/CABLE

selection is highlighted.

3. Press "left arrow" or "right arrow" button to highlight either

TV or CABLE, depending on which you use.

If you use an antenna, choose TV.

If you use cable, choose CABLE.

4. Press "down arrow" button until the CH PROGRAM selection is highlighted.

5. Press "left arrow" or "right arrow" button to start channel programming. The TV will automatically

cycle through all the TV or Cable channels (depending on which you

selected), and store all active channels in the channel memory.

While the TV is cycling through the channels, the message

"PROGRAMMING NOW-PLEASE WAIT" appears.

6. When channel programming is complete, the message "COMPLETED"

appears.
7. Press CH UP or DOWN button to view the programmed channels.
OK.

Most of the time it is the touch button assembly on the tv. The Volume down touch button switch is sticking.
I hope this helps,
Skyassoc

There is nothing wrong with your radio. Your Elantra radio automatically changes the volume for you. When you slow down and stop, it lowers the volume, then the volume goes back up when you accelerate.

On your remote control (with tv off)
1. press Display, channel 5, Volume Up and then Power
this brings up the service mode (you will see some green text on your screen)
2. Press channel 2 to scroll through options until you see "Micro" in the upper left of your screen
(channel 2 cycles up through the options, channel 5 cycles down)
3. Press channel 1 to scroll through suboptions until you see "DIOF" appear under "Micro"
(channel 1 cycles up through the suboptions, channel 4 cycles down)
4. Press channel six until the default value (12:60) changes to 12:40
(channel 3 increases the value, channel 6 decreases the value)
5. Once the value has been changed to 12:40, press Muting and you should see red text in the upper right hand corner that says "Write"
6. Simply turn the power off and back on for the change to take effect. Your volume problems should now be fixed.

my sony trinitron is blinking six blinks and I cannot turn it on, please help

this is the same type of problem happening with other rca models and I know it is the EPROM CHIP but why this is failing is either because of design flaw , dirty enviroment that they were made in , to much voltage or current to the chip or too much of a draw from the chip causing it to fail . Or even a random frequency from the IR sensor or its circut I'm still investigating and testing.
leave the tv unplugged for at least 3 weeks durring this time resolder any solder that don't look good , I did this and it lasted for about 6 months(always plugged in to the wall) before it started doing it again. model # 27v412t

I am having same problem on 32 inch same problem. After playing with board with no results,I tried front buttons and found that if I held the power button in ever so slighItly as not to turn it off, it fixed problem which is the micro on/off switch, I removed the switch and used the remote and everything is back to normal, I am about to insall a used micro switch after I finish typing this but I am sure this will clear up volume problen and menu going crazy problem if not I will just leave micro switch out and use the remote, and I will get back to this board only if that micro switch still causes the problem, so if I don't post in next hour the problem is fixed and I'm more than glad to help.

Hi there!
I think your remote may be at fault. Liquid spill or sweat from the hand accumelates on the inside over some time and then becomes sticky. Some of the buttons may be permanently activated. Then other functions won't work. Have someone check it for you or if familiar yourself. Regards, JUS004