Panasonic Plasma TH-42PV500H goes blank on power up
Hi Thismodel of Panasonic plasmais probably the model for Asia. One day my plasma screen displayed various colurs and when we switchedit off and on again the power LED just blink on an off at regular intervals to a blankscreen.Soinput source (TV or DVD) works and no volume either.Any idea what the blinking power LED indicates.
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faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
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Plasma displays do not have backlights. The ionized gas (plasma) in the pixels is the light source, just like a tiny neon light. If your screen is dim or blank, check the high voltage supply that ionizes the gas.
This is an issue with IC 803 on the Z board. This is a 3.3 V regulator that supplies this voltage to the slot card cage. Most input boards use this voltage EXCEPT the component board which is why it keeps playing along whike the DVI, HDMI, or composite signals will cut out after warm-up.
This is a surface mount multi-pin IC and is a bit tricky to replace. The entire board is PN# TNPA3198xx with suffix determined by what model 7 series plasma you have.
This was a problem from around Nov. 2004 to Mar. 2005
Sounds like a main board or a sustain board problem. This is most definantly not a repair job for the consumer to attempt. Please call in someone who is experienced with Plasma TV sets, as these boards can be very very expensive. Too expensive for you to guess and buy and then have to order the other one. Oh this model also has some power supply issues as well. Good Luck
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