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JanFan
New Member
3 Posts |
 Posted - Dec 15 2007 : 10:51:00 AM
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Hello All,
I have a Plasma/LCD TV lift / popup cabinet from an unknown manufacturer. I was working beautifully until yesterday when it stopped rising unexpectedly.
I will describe the control unit:
The buttons are small squares mounted on a rectangular black box. Green is up, red is down. Next to the buttons are 2 very tiny round flat buttons and 2 tiny lights. One button is labled “Viewing Position” and when pressed the light turns yellow. The other button is labeled “Remote” and has a red light. There is a small green "Power" light to let you know that the unit in plugged in. There also appears to be a remote control wire sensor, but I don't have the original remote.
Previously, the yellow light next to the "Viewing "Position" button would come on when the button was pressed, and I was able to set the exact height at which I wanted the lift to rise. Now (following the last time the lift was lowered all the way down into the cabinet), the lift does not move, and the yellow light does not come on when I press the viewing position button. When I unplug the unit, the yellow light flashes once, and when I plug it back in, it does the same, but there is no response when pressing either the up or down button (no motor sound, even thought the power light is on).
I thought that maybe the viewing position set feature might be malfunctioning and is set to the lowest position which might be why the lift won't rise. I am trying to find a universal remote to operate the lift so that maybe I can override the manual buttons.
Any suggestions from any of you electronics wizards would be most gratefully appreciated.
Mel |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Dec 16 2007 : 10:17:48 AM
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Without knowing something about the circuit, it's very hard to give any meaningful advice. The position of the lift may be fed back to the controller via a series of switches on the mechanism or a pot. Make sure that they are still connected and not obviously broken. Test with a meter.
Also check any flexible cables that may be on the mechanism. They may have worn out and become intermittent.
The main board can also be examined for something obvious like a disconnected wire or cold solder joints. |
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JanFan
New Member
3 Posts |
Posted - Dec 16 2007 : 8:53:02 PM
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Thanks for your suggestions. I took the front panel off to see if any of the wire connections had come loose. While I was inside, I noticed that the bottom of the lift was tilted forward. I tilted it back to a level position, and the lift works fine now. I guess it is some kind of safety feature that prevents it from moving if something is in the way (like a garage door).
Needless to say I am EXTREMELY RELIEVED! |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Dec 18 2007 : 09:32:59 AM
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Sweet. Glad I could help. Usually it's not this easy.  |
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Topic |
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Plasma/LCD TV Lift - won't rise
