I have a 5 years old Panasonic PT-47WX49E. It turns itself off immediately within 2-3 seconds of turning it on then it will not turn on unless you unplug the power cord and then try it again. It will do the same thing again. It seems like the TV's circuity is detecting something wrong and turns itself off. Does anyone know what the problem is or where the problem could be? I have a electronic background but never fixed any tv. Also, if anyone have the schematic for this TV I would appreciated if someone could send it to me.
Scotty5 I have the exact same problem. If you come up with a solution, please let me know. Mine just started having this problem this morning. thanks, [email protected]
Posted on Aug 06, 2007
I was given a 42 in panasonic because it had this problem. I took it home and plugged it in and pushed the power on button. before it could come completely on I pushed the power off button. I did this 3 times and then turned it on and TV worked fine. This made my friend sick since he just bought a new one. I offered it back but he said keep it. :)
Posted on Jun 20, 2007
This is for sure a safety shutdown circuit that is shutting down this TV set. It is a hard call to pinpoint a problem such as this without first doing some troubleshooting on the TV set. You could have a short in the sweep power supply, the horizontal output transistor could be bad, therefore then the flyback is probably bad, or the vertical IC could be bad, there could be a regulator problem in the main power supply that could be bad, and also the convergence IC's can cause this problem. Almost any circuit inside this TV set can be detected and staop the set from starting up. Good Luck
Posted on Jun 07, 2007
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Posted on Jan 02, 2017
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