Question about HP PL5072N 50 in. Plasma HDTV
We have not used this TV often, maybe couple of hours a week as it is located in the LOFT. Suddenly, the screen went ORANGE with message start testing...then "No problems Found-Please Power off your TV and check video connections" the screen would not change and cant control it from integrated buttons or from the remote
Sounds like a voltage problem to its display panel. Even a slight change in the Va&Vs voltages to the panel, all plasma displays, irrespective of its brand and screen size; will show serious and strange problems. Contact any service technician, and check these voltages. this is not a user repairable work. Va & VS voltages comes from its main power supply regulator board, and have adjustment presets are there. These voltages will be mentioned at the silk screen on the back of the display panel.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.
Posted on Dec 16, 2014
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Posted on Jan 02, 2017
It is either the power supply or the backlight inverter board finally failed. You will need to do some voltages checking inside, also see if you can see any bad caps in the power supply.
See my troubleshooting guide here:
Posted on Jun 16, 2010
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