Question about Zenith B25A02Z TV

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TV comes on then shuts off in about 20 seconds

Something must be heating up and then it shuts off with a POP that comes through the speakers. What is the most likely component that would cause that? Zenith SM3247RK8 built in 1994. Sound works fine.

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  • maccoak Feb 16, 2009

    After further diagnosis, with the TV on channel 03 and the digital converter box on and on a working channel I can get sound but the screen stays black for the 20 seconds then the whole TV shuts off with a loud POP through the speakers. It makes no difference what level the sound is set on , the POP remains at the same loud level. There are no visible indications of overheating on the circuit boards or any of the components. MACCOAK

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Can't say for certain being a layman and the only reference I have is a little prior experience with a similar problem. So use this advice at your own risk. hold down your menu button, if set still goes off turn on again! press menu go to antennae not cable if it stays on at this point exit out of the menu then press and hold again and when it goes to display the channel your on press the adjust and channel up buttons at same time to get to the factory set-up screen once there use the select button to scroll through its lists until you find something like AFC automatic frequency control and set that to 7 by using the select button should you see AC while scrolling check if its on 1 or 0 it should be on 1 this may also aide you in solving the problem should this not help just unplug your set for 4 hours and plug back up that should hard reset the set.

Posted on Mar 26, 2009

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