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I have Panasonic TX28MK1 28" TV it has developed a fault on switching on it tries to fire up then instantly turns off again you some times can see the picture for a milli-second while using the remote to turn it on, it flashes white when switching off again. up until this fault all was working fine . I wonder if anyone has any ideas as to what this might be? is this a common fault and easy repaired .

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Power supply could be failing

Posted on Jul 05, 2017

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1894 Answers

SOURCE: panasonic th-42pa20 plasma 42 inch tv

was that capacitor damaged?

Posted on Jan 11, 2008

  • 54 Answers

SOURCE: NO PICTURE, NO SOUND, TV TURNS ON THEN TURNS OFF

maam\sir,,,i think theres something wrong with its power supply,,,kindly chect the power supply section of your tv,,,thnksss and hope to help you,,,!!

Posted on Jan 29, 2008

  • 579 Answers

SOURCE: Hitachi 32LD8700 - TV won't turn on although has power

The general problem with LCD type TV's is that the power supply fails. They are very sophisticated designs that are difficult to troubleshoot and generally best to just replace the module, but sometimes there is visible damage in some of the electrolytic capacitors (visibly bulged) and high voltage rated parts can be substituted.
Hope Ya Fix It

Posted on Feb 10, 2008

  • 2 Answers

SOURCE: RCA P52753AT tv will not turn on

the High Voltage splitter needs to be replaced

Posted on Apr 05, 2008

  • 1 Answer

SOURCE: Panasonic 32" HDTV keeps turning off

Check or have a repair tech check connectors AP1 and AP2. Vibration rattles the power supply board (a crappy design, as the board is almost "floating") and causes the wires in the connectors to break, and may make intermittent contact. Heat may also cause intemittent contact. A very common flaw.

Posted on May 06, 2008

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Sharp aquos fault


Take it back to where you bought it before the warrantee runs out.
Any solution here may invole opening the set.

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When I turn the power switch on the tv turns on and after 2 seconds it turns off then it turns back on then off again on its own. I have to unplug from power source to get it to stop.


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, but when the set is shut down, the "Fault" disappears and the detection circuitry then tries to Restart the Power Supply, it comes on, only to again detect a Fault, and it shuts down, now if left, it would "Hic-Up" like this until destruction 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" Sanyo, 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.

Oct 15, 2010 | Sanyo Televison & Video

1 Answer

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


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

Oct 03, 2010 | Panasonic TH-42PHW5 Television

1 Answer

Cant turn tv on..power button is blinking red


This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an Akai, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, 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 parts on hand.

Aug 06, 2010 | Panasonic Viera TH-50PZ85U Plasma TV

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When i turn it on it doesnt come on.the indicater light keeps switching from green to orange but the screen does not come on.i have turned the tv off from the main switch but this didn't helpi have only...


This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an Sony, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, 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 parts on hand.

As an aside, if it were me, I would update my TV, and put any money contemplated to fix it, towards a new unit with a warranty... This would be better spent, than putting money into an already older set, that may, according to statistics, will fail again within 12 months.

Aug 03, 2010 | Sony Grand WEGA KF-42SX300 42" LCD TV

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TV getting switched on and off itself


This is a classic switchmode power supply, shutting down to avoid a fire, explosion, or both. This set had developed a problem, that is so severe that the set must be shut down, This set should be removed from the Power, and in my professional recommendation, you should get a "Quote" for repair, from, an RCA, Approved Service Center, this point is very important for a good result, Always contact, their local, "Head Office" Now, when you get the information you want, 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 parts on hand,

Jul 27, 2010 | RCA TruFlat 27F520T 27" TV

1 Answer

TV will not turn on


It is NOT the switch, I am sorry, you have developed a serious fault in your set, so much so that the set has shut down the power supply to prevent a fire or explosion, or both. please remove from power. get this unit looked at by a Sony authorised service center, real important, ask for a free "Quote" before proceeding with any repair.

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When i turn my tv on after about ten minutes its powers it self off


hi, well unfortunately your unit has developed, a fault, a component is heating up, and failing this is probably due to a bad power supply, and you see the unit detects a fault, with the thermal component changing value and then the unit shuts down to avoid a fire or explosion. faults such as this are VERY hard to determine, it may be worth while waiting until the fault becomes "Hard" and then get a firm "Quote" for a repair.

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Fire in the power supply area so i have no circuit diagram for some value of zener and resister in th model of TC 21FX20C OF PANASONIC


If you have had, a fire in the power supply you MUST have a real serious fault, short circuit, most like, elsewhere that has caused that to happen... you MUST find that problem first otherwise it will simply happen again at switch on.

Feb 16, 2010 | Televison & Video

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