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Lg42lt75 problems after being on a while the tv wont let me change channels.i have to switch it on and back off again

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Can you change channels on the TV itself when this happens? If so, change the batteries in the remote.

Posted on Feb 27, 2009

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Channel scan only finds 1 channel with basic cable setup on LG 42LD520


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Our lg42lt75 tv keeps freezing on dtv the only way we can it going again is to turn the power off .is there any way we can stop this?


Your current software version of the TV may be out of date, contact your LG dealer as this might have to be updated, older software can give this effect. If your incoming signal from an aerial source is weak then this can also cause problems the strength of signal can also be checked at the same time.

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The problem your describing can be contributed to your cable box. Depending on your cable company there are times when the box has trouble translating the signal to the tv. You tv is operating normally. Suggest to the cable company to switch your box.

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apparently the  the TV resets the channels bewtween 2:00 AM and 5:30 AM, so by changing the clock everyday to ensure that it never reaches this time should resolve teh problem, or just try an not set the clock at all if that is possible, my parents are having the same problem and ive heard changing the clock works, still frustrating, currys have been warning people off buying them due to " tuning malfunction" feel free to take it back to the store and get a refund

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AUTO PROGRAMMING T.V.


Your TV is in Showroom Mode - to change:

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Then go back and autosearch channels.

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1 Answer

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ok, Sony had this issue on their early production. The problem you are having is called a leaky switch. The volume down switch on the TV is leaky. To fix this you must replace the switch. This part is called the switch block. Part number 1-473-549-21

Average cost $26
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