Question about Panasonic Viera TH-50PX80U Plasma TV
Before replacing any more parts you should do some testing: first make sure that the power cord is ok (no, it's not stupid, you wouldn't belive how many times i stumbled on that); next you should check the noise filter; next the power button (including the starter contact); next the rectifier of the power board; next the output of the power board. From there , if you find a faulty output, you should check the parts/boards powered by that output. Only after you have identified the failed parts you should order them.
Posted on Aug 07, 2010
Thanks in advance for choosing Fixya for Assistance
• It could be causes from a bad or group of defective
First you need to understand that there are Voltages applied to the
Electronics Components/ Circuits to work.
And these voltages can affect and control the system status, as it has
protections circuits even from the Microprocessor built-in inside your TV.
To know the cause , you may need to open it up ,
Only if you feel you can.
• You may need to measure voltages, But sense of hearing and a
good visual may partially aid you in localizing the problem.
How to test for Continuity
How to use a multimeter
Here are some of troubleshooting Guide:
• When the Plasma TV is plugged in, there’re a few
indications of normal operation. Knowing this will help us
understand what’s going on with the unit when an
1.There is a click from the relays RL402 and RL403
when they are activated.
2.The LED in the Optical Jack inside the DT board turns on
for approx. 4 seconds.
3.Immediately after that, one of the Tuner LEDs (Right) turns on
( Solid Red ) for approximately 20 seconds.
4.The LED in the Optical Jack inside the DT board turns on again for
approx. 1 second and both LEDs (tuner and optical jack) turn off.
5. Then you will hear another click from the relays RL402
and RL403 indicating that they are no-longer engaged and
the Optical Jack LED turn off.)
• You need to check For Standby Voltages
STB 5V and 12V
For complete troubleshooting :
Service Manual can be downloaded here:
Only with a fee.
• Use it to properly guide and aid you in further troubleshooting.
Regards and Good luck!
Posted on Aug 07, 2010
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Posted on Jan 02, 2017
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