Question about Panasonic Viera TH-50PX80U Plasma TV
Tv worked fine last nite but today it won't start and the red power light just flashes
Posted by Anonymous on
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Posted on Jan 02, 2017
If the TV goes in standby, then it is in protection mode.
Ensure also that the fault is not coming from a faulty receiver box sending
bad signal, check if you get same problem on DVD with no receiver box
Try first leaving the TV power cord unplugged for some times, let say one hour or so.
The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.
1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.
2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.
If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.
If you are in situation 2 , then there is an internal fault.
If under warranty contact the manufacturer ringing the number on the user manual
If you want to repair at your own expenses, just locate any good qualified repairer.
If you want to DIY you find parts here,
All: Appliance parts, electronics parts & more from PartStore.com
Encompass Parts Distribution
LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |
On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem
On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.
On Rear Projection : check lamp, lamp ballast, power board, and convergence.
On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.
Posted on May 05, 2009
SOURCE: flashing red light
When the power light blinks the set's protection circuits are causing the unit to shut off and blink. The series of blinks is an SOS signal that a servicer can decode to help diagnose the problem.
For those in areas other than in the US, I can't really say what the issue might be as the SOS patterns may be different for different countries. But, if you can find a service manual for your area you should be able to at least get an idea of what might have happened to it. There's no guarantee that what you read is the actual problem without further testing, however a solution which may work is press & hold the power switch on the TV -- that resets the switch..
psl rate my suggestion.
Posted on Jul 24, 2009
The repetitive blinking light is a trouble code which is used to determine which series of boards may need to be replaced. How many times does the red light blink?
Posted on Aug 30, 2009
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