Question about Toshiba 32A33 32" TV
Every time i turn it on i have to repeatedly hit the side of my tv so it comes on. What can i do to fix the problem? I hear audio, but the screen is blank until i hit it repeatedly for ten minutes>
If your TV still does not turn on after unplugging , then you will have to retry for a longer period of time. Try longer periods of time such as overnight. And you must unplug the monitor from all connections that can supply power to the TV. It is recommended to remove all connections. If still not working,then it maybe a loose contact or cold solder.
Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the TV turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.
Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".
Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....
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Posted on Aug 25, 2008
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Posted on Jan 02, 2017
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