Question about Panasonic TH-42PHW5 Television

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My th-42phwh telly keeps on switching itself off after five mins of use, the led is still showing green.. what could cause this?

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  • Panasonic Master
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This is a classic switchmode power supply, which is shutting down the set to avoid a fire, explosion, or both. This set has developed a problem, that is so severe that the set must be shut down, This set should now, be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Samsung, in your case. Now, when you get the information you want, from the "Quote" well, then you can decide as to repair of replacement. The reason we want an approved agent, is that way, all the engineers are trained on their own brand sets, they have seen almost all faults, and will get the job done quicker, and for less cost, and usually have original parts on hand, also sometimes, there has been a service bulletin in issued and the repair may be subsided or even free.



Whenever a PSU shuts Off automatically, well this is due to the "Protection Circuitry" detecting a Fault, that is potentially so severe that, the set needs to be shut down, then, immediately, to avoid a fire, and explosion or both.
Now it is THIS "Cause" that must be found, and repaired, also any damage done by that "Cause" too.
Now irrespective of whatever the Symptom is , one MUST always start at the Power Supply, and make sure this is 100% correct, as if this isn't NOTHING else can ever be. then once one is sure that it is OK, then work out from there to try and find the actual "Fault".



https://support.panasonic.co.nz/.../TH42and50phw5AZ%20book.pdf
Above is your User manual, below is your service and repair manual. Should you wish to DIY.
http://www.eserviceinfo.com/index.php?what=search2&searchstring=TH-42

Posted on Oct 03, 2010

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Posted on Jan 02, 2017

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