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Isolate the problem by removing the batteries from the remote. If the problem goes away replace the remote: "CHEAP" . If the problem does not go away, the problem is in the TV, repair the TV "EXPENSIVE" !
The most commom causes are One. There ia a stuck button on the tv itself. The Menu button. The membrane switch or the TACT switch is bad and needs to be replaced. The Main bd can also be bad.
Yes. Its probably a stuck button on the TV's front panel. Try pushing or wiggling each button on the panel. It could be the channel up/down buttons or volume up/down, menu, etc.
When there is a button that is making slight contact, it keeps the microprocessor busy attending to the command its erroneously receiving from the offending button and may not allow other functions to work when this occurs.
It doesn't matter which button is stuck, any of the symptoms you describe can happen.
A friend of mine had the exact same same problem. I think I fixed it, because it has been 2 hours, without the menu popping up. You need to open the monitor:
- Place it face-down on a flat surface
- Remove the cover of the hinge by gripping it with both hands and gently squeezing and pulling.
- Undo the 4 screws and remove the stand (base)
- Undo the four screws tha hold the cover down (4 corners)
- Use a flat screwdriver to seperate the 2 halves (I used 2, a small one to lift the back, a bigger one for leverage)
You will see a small PCB, fastened by 3 screws, at the bottom (where your menu+on/off buttons are) with a ribbon connection to the screen. Next:
- Unscrew the PCB, and gently lift it out.
- Clean the microswitches and the ribbon cable connection.
- Reassemble the monitor.
To clean microswitches and the connection, I used Kontakt Video 90 spray. There must be sprays on the market where you are. It's basically an alcohol-based cleaning spray. Good for cleaning video/tape/floppy heads, CD/DVD lenses, memory modules, etc.
I don't know if this will help your problem, but we were having similar problems with our Toshiba 32A33. None of the buttons on the TV or remote worked, the volume would go up and down uncontrollably, it wouldn't turn back on unless unplugged for several hours
Try either taping a penny very firmly over the TV/video button on the set to keep it depressed at all times, or wedging a piece of plastic in it to keep it down (Cardpsycho's solution). However you do it, keeping this button depressed solved every problem we had.
Just guessing but the menu button the remote may be sticking Try turning the remote away from the TV. Also the menu tact switch inside the set may be defective
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