Question about Maxent MX-42HPT51 42 in. Plasma TV

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Tv is hooked to cable but still gets no picture or sound...only a blank blue screen

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Verify that the source is set to "Tuner", "Cable", "Antenna" or "TV". (I don't know which of these names Maxent uses, and the site formerly used for their downloads is now a generic search page.) Make sure the TV format is correct for your region (in the US it should be ATSC, sometimes called HDTV).
If you have a portable TV, bring it over and connect the cable to it to verify that the cable connection is good.
Check the other inputs to verify that the internal video switch is functioning properly. If you don't find a problem with any of these tests, you likely have a tuner problem. Note: do not use a tool to tighten the cable on the tuner connection. I've seen a lot of tuners broken that way, including some with the circuit board ripped apart inside. Use your fingers, and just make the nut snug enough to hold the cable in place and secure the ground connection made through the nut.

Posted on Feb 17, 2012

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I just wanted to suggest some things for you to try, if you have not done them already. Try hooking up a known good signal, such as the main input cable from your cable or dish, hook it straight to your tv, and see if you can change channels, and get a picture on low band...2 thru 6, and then if not, how about any picture above channel 6, if you get picture on 2 thru 13 now, it could be whatever you have hooked in between the input cable and the tv...be sure you have the tv on the right channel for your receiver, usually 3 or 4, or if you are using another type of video input cable, make sure you have tv on the right input for that cable and that cable is good...check the in and out of your component unit, for correct cable hookup as well as your cables, in reference to using RCA video and audio left and right in and out...a lot of sets and vcr's will go to a blue screen if they lose signal to them....I hope this helps you out some.If you cannot get a picture from hooking your signal straight to your tv, it could be the tuner got a spike from a thunderstorm, or has lost the B Plus source for the tuner circuit. Be sure that it is not selected for an input signal,other than the cable or antenna mode, the onscreen text should verify this, if you can change channels with or without getting video...a picture....Good luck with it. T.

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