Question about Samsung PN64D7000 64" Plasma 3D HDTV PN64D7000FFXZA
The TV power cycles correctly - logo screen appears and input indicator HDMI2 appears in upper left before unit shuts off and starts up again. I have verified key voltages Va, Vsc, Vs, and Ve at the available test points on the power supply and X/Y boards. Logic board LED indicator heartbeat blinks at the correct rate i.e. no drive failures detected while unit is on. I have also bypassed the main board short PS-ON to GND and jumped pins 3&4 on logic board and watched test pattern screens; I didn't see any anomalies in the video - no bad lines, no missing pixels, no missing brightness, etc. I also tested 5V and 15V pins between power supply and main board - all appear correct. I do not see any blown capacitors or burnt IC's from a visual inspection. Y board does hum while power is applied. Any help determining which board is bad or further troubleshooting steps would be appreciated.
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Posted on Jan 02, 2017
Have you tried replacing the power cord or the voltage feed may be off replacing the whole cord should correct that
Posted on Jan 02, 2015
Testimonial: "If all the voltages are correct except the one on the VE, how can changing the power cord make a difference? The VA and VS on the power board are perfect."
If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line 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..
Posted on Nov 22, 2016
SOURCE: I have a samsung PN43E450A1FXZA Plasma tv. I have no standby light, no power on. I do not have PS-ON voltage or VS voltage on board. Any idea which component on the power board may possibly be bad?
If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/.
Posted on Dec 28, 2016
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