Check the speaker/s first. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, replace this board as card basis.
If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/
SOURCE: the buttons on top of mt tv go crazy
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.
SOURCE: Volume automatically goes to the loudest
There should be a setting that allows you to set the "Power On" volume level. Check the menu Under Volume settings.
What is the make and model of the Television set?
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