Toshiba (model 19av500U) volume goes up and down automatically

hi select menu sound setting look for avl if it's on turn it off, if this don't work, you may need to to replace the mainboard, thanks

shaun

Toshiba 19AV500U Owner Manual

The HDMI 720p pop up,because on the tv Menu setup OPTION,U pick YES on the tv Program Title Display option,pick NO should stop the pop up HDMI 720p indicator.The volume bar indicator pop up when it press the button to turn volume up or down it is mornal functions of the tv.

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

sticky volume button on the remote. try hideing the remote to verifi the problem

I removed the HDMI cable and connected with component video and rca audio. No more white screen.

Picture quality looks good. I don't know if it's as good as HDMI, but then I don't need to reboot the TV three times to get to teh on-demand menu... Grrrrr....

I am trying to contact Toshiba on this as well. I have seen several reports of this problem on the web.

yes to find proper mount google 19av500u wall mount PLEASE make sure it is screwed into a 2-by-4 in wall

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.

well depends on how far it turns the volume down as to what the cause is and if the volume bar on screen display comes on when the vol. goes down. if it just goes down a little you probably have the "smart sound" setting turned on in the audio menu turn it off and see if prob. goes away. if the vol. bar comes on the screen whenever the vol. goes down the you most likely have a bad button on your front panel and it doesn't have to be the vol. down button. it you think it is the button it would need solder work to be changed most likely shop job.

toshiba 35a44 I had in shop would not turn on initially,when Qa01 was replaced I was able to turn tv on, but after a couple of minutes volume went all the way down, vol display bar on screen and power and menu keys would not work, remote control function did not mater. after replacement of QA02 mpu no results. desoldered volume down and up keys and sprayed chassis with flux remover on both sides of chassis and sumerged vol keys in alcohol solutions for 10 minutes, restored them in chassis and the problem was corrected. QA01 and QA02 did not had to be replaced there was a contaminant problem on solder flux that was causing the problem. kbzon