I have a Toshiba model 32A43, the other day, without any buttons being pushed, the volume suddenly went to maximum, the power button would not work, volume can not be turned down on the set or by remote, but the channels will change using the set's controls. After turning the power off at the power strip several times it finally seemed to reset. It worked fine for about a week and did it again.
The buttons don't seem to have the same "feel" as when it was working properly.
Can it be fixed? If so, about what should it cost to fix it? Should I toss it and get a new one?
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Re: Volume go up to MAX, power button does not work
To all of you, change the tact switches (all of them) on the front panel control board and end of problem, very common problem, part number for these switches is 23344443, any or several will become "leaky" and give all sorts of symptoms, MANY times this is caused by using windex or similiar type cleaners, it gets into the switches and corrupts them, this will fix-ya, BMW Rider
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I had the same issue. You can use the on screen volume buttons on screen to stop issue and don't use the physical buttons anymore. Watch out about a month after the volume problem started all physical buttons on my DXN7120 stopped working. There are a few reports of this online, I have not found a fix yet.
check the front button plate on the front of the tv very carefully.if it has been hit with something and either or any button is pushed in,it will not listen to other commands.make sure each button has a distinct click when pushed.a frozen button will cause other things not to work.it sounds to me like two buttons are making contact,and they are beside each other,so the button plate is crooked or warped.
To fix: turn on unit, turn volume all the way down to 00, push and hold volume button for 10 seconds until beep then release, then turn volume all the way up to 50 (max) and push and release volume button.
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.
the intrenal switch that controls the volume up is shorted. you need to have it replaced. the short of the switch doesn't allow any other buttons on the set to work because the micro is recieving the volume up command. it's as if there is an invisible finger pushing the volume up button. the switch is a tachtile switch which is very inexpencive to repair about $50.00 total. if you want to do the repair yourself be aware there are voltages that remain in the set that can be harmful. 50% of the time the cause of these switches shorting is improper screen cleaning. some people spray glass cleaner directly on the screen, this is bad. the cleaner drips into the set and lands on the PC board where the buttons are housed. but I've seen the other 50% also which is hummidity, dust(not anyones fault this just happens), and simple switch failure. so becareful repairing it your self
front control board needs to be replaced or eprom is corrupted one or the other, would have to do a couple of checks to know for sure, a tv tech can tell you 20 minutes after he gets there, neither part is a big bucks repair, hope this helps, BMW Rider
I had the same problem, you'll probably find that that particular button will push further into the set then the others, this is due to the a weakening of a cheesy metal guide which directs the projection off the back of the button into the corresponding microswitch. This metal guide will bend and will push against the switch.My solution, (and it ain't pretty) was to unplug the set, remove the button( I used a dremel cutting bit), locate the guide,a small metal plate with a hole in it. Bend the plate toward the front of the set then tape over the hole. I haven't had the problem since.You WILL have to use your remote for further functionality of the volume, However all of the buttons seem to be inherantly poorly designed and will weaken over time, AVOID USING THEM!