Question about Panasonic 42" TH-P42X30Z HD Plasma Multisystem TV FOR 110-220 VOLTS
I was using the TV last night and it worked fine. I came back from work today and tried to turn it on but it will not work. Pushing the button or using the remote does not get a light to come on or anything. I tried changing power source and that didn't work either. Any ideas?
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Posted on Jan 02, 2017
SOURCE: 42" Plasma TV Problem
same frustrating symptoms on brand new 42inch here! tv just turns itself off sometimes without warning or if changing to certain channels. leaves red light flashing for a while then red light goes away. any attempts with remote gives flashing green liht on tv. manual power off and on restarts tv but auto off again. found while manual power on keep changing channel on remote till stable picture appears. then use remote to shut down tv - solid red light indicates standby mode. then use remote to turn on again... till next time it happens. but what is technical fault??
Posted on Oct 07, 2007
The number of flashes is an error code. Count the number of flash. It looks like one of the boards in your set is failing intermittently. Panasonic codes for a guide as a starting point. Exact board STILL has to be verified;
One Blink: One blink of the power LED indicates a problem in the inverter circuit located on the LCD panel. The inverter board is not to be repaired in the field. Therefore a replacement is required.
Three Blinks: Three blinks of the power LED indicates an over-current or over-voltage condition in one of the DC supplies of the AP board. The AP board is repairable. Therefore the use of an ohmmeter and peak-hold-voltmeter is required to determine the cause of the shutdown. An over-voltage condition is definitely a defect of the AP board. An over-current condition may be due to a short circuit located in the AP board, A board, or the LCD panel.
Five, Seven, or Eight Blinks: The A board is responsible for five, seven or eight blinks of the power LED. The MAIN +3.3V, MAIN +5V, and MAIN +9V sources are all produced on the A board. The detection input pins of the MPU, IC1100, monitor for their presence.
Four or Six Blinks: The AP board is responsible for four or six blinks of the power LED. The DTV9V, and SUB_5V sources are produced on the AP board. The MPU IC1100 monitors for their presence when the unit is connected to AC Power. A short or open circuit on the A board may also be responsible for their absence.
Nine Blinks: Nine blinks of the power LED is due a short circuit in the audio output circuit (s) of the unit. The audio output circuit is located on the A board. Confirm the status of the speakers. If defective, perform a replacement. If ok, replace the A board.
Ten Blinks: Ten blinks of the power LED indicates a malfunction of IC4200, the frame converter. This IC resides on the A board. Therefore ten blinks of the power LED requires the replacement of the A board.
Posted on Feb 11, 2009
SOURCE: TV won't turn on
If you're any good at repairs I would check for an in line fuse. Check right where the power cord hooks into the TV. They sometimes blow just as you've discribed. If it's blown it's a pretty safe bet that replacing it will fix the problem. There is however a slight chance that something else might have blown it so if you replace it and it blows again take it to the shop. You've got a high 90"s % chance it's a 50cent fuse though. Good luck.
Posted on Feb 18, 2009
This problem happens when you connect a DVI-HDMI input to the back of the set. It can happen other ways too though. Press and hold your power button, which will reset the unit to it's factory defaults, and should return it to normal use.
Posted on Mar 05, 2009
Your powerboard is damaged, and need to be replaced.
Sometimes it appear the TV is working again with no problem but it is only a matter of time for the board to get completely damaged.
Posted on May 30, 2009
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