Question about Panasonic TH-42PD50U 42 in. Plasma EDTV

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Panasonic plasma tv th42pd50u

There is a small problem when you turn it on it starts to power up and then a few seconds later it clicks and turns itself off 

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  • 4 Answers

SOURCE: The green light on for 2 seconds and off again (Panasonic TH-42PWD5UY)!

* cd-vcd-dvd-ld player.
* colour tv, Lcd/plasma tv.
* projection tv.
* prologic AMPS
* Grill/microwave oven's
* Digital proffesional camera.
* Digital camcorders.
* LCD/Digital projector.
* Hi-Fi music system.
* FAX machine.
* printer/scanner/copier.
* play station (PS1-PS2).
* X-BOX360.
DIAL..........: 9820380682

Posted on Jan 23, 2008

  • 583 Answers

SOURCE: Panasonic 50" Viera plasma on/off problems

its the problem in main board.any of the capacitors or ic are getting overheated that needs to be checked and replaced. thanks.

Posted on Jul 13, 2009

  • 151 Answers

SOURCE: panasonic viera tv won't turn on. Power light

hello, you have a either your su, sd or sc boards fualty and it is a driver sos1 thats what the manual reads the best thing to do if your not electronically inclined or able to fix it is to get a service manual and make sure it is for your specific model and size you will find what the 7 blink codes mean, on my side i have a 42 in pana the service manual for this set and your is similar so since it is not the same model i cant tell you exactly what the truoble is but your best bet is to find a service manual find the 7 blink fualt then without getting ripped off you will know what the service man needs to do if you dont know or cant replace the parts yourself that is besides having to download firmware from your computer to a sd card and update your set but you need to solve the blinking code first it may solve the entire issue. the tv should come on when you resolve the blink codes or replace the fualty board or boards

Posted on Oct 14, 2009

  • 4234 Answers

SOURCE: Cracked on Inside glass on 42in Plasma-Panasonic

This sounds like the panel itself is cracked. If this is the case, the set wil not completely power up as youi have seen. The panel can not be repaired as such, it must be replaced. I can rpovide you with the part number and cost if you can post the model number. Be aware however, that the cost of the panel may come close to the cost of a replacement set.


Posted on Dec 10, 2009

Testimonial: "Model # TH-42PX80U"

  • 178 Answers

SOURCE: TH-42PZ80U Panasonic Plasma, red light flashes 10 times

Panasonic said "A" board,
A board SOS Detect (Explanation)
10 Blinks SOS: The voltage regulators IC5400 and IC5401 in the A board generate SUB9V and SUB5V. The 9V and 5V from these ICs are monitored by IC1100. Any abnormality on the SUB9V or SUB5V lines, triggers the shutdown circuit and the MPU shuts down the unit. The power LED blinks 10 times.

But need to measure the connection SC2, if it short, it will be the SC board.

The knowledge obtain from: Real case of repair by myself.
Information from Panasonic training manual.

Posted on May 10, 2010

  • 8457 Answers

SOURCE: 10 red blinking lights on my Panasonic Plasma TV,

The power supply board is dead,that the board where the power a/c cord plug into it.Tries websites like, to buy a refurbish power supply board for the replacement.

Posted on Jun 24, 2010

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Panasonic Viera tc-p60st30 tv will not turn on. No red blinking light. Relay clicks every 10 seconds.

Try disconnecting all of your HDMI cables and plugging the power cord of the TV into another wall outlet. If this resolves the issue, you may have had a small power surge from either your wall outlet or one of your source devices. It is recommended to connect your TV to a surge protector if you haven't done so already.

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Tv isnt turning on, you will hear a click then see the power light flash 6 times then the light goes off for about 10 mins then comes back on flasing again...and the cycle just continues. It did this once...

Sounds like a power supply problem. I worked for a short period for Panasonic at their USA plasma R&D / small scale manufacturing facility and learned that to "ignite" or start the plasma when turning on the set, a significant current discharge is required.

The recycling seems to indicate that the "brain" in the set realized that a plasma has not been established, and it is attempting to recharge the starting circuit. The flashing power light is probably significant and a trained technician or a service manual will probably identify this as a trouble code pointing to the problem. Sorry, I did not have any exposure to the finished product and cannot advise what the code means.

If the set is still under warranty, you should act immediately and get the problem taken care of, because it will not go away on its own, and will most likely get worse. Sorry the news is not better. Good luck!

Jan 28, 2011 | Panasonic Viera TH-42PX80U Plasma TV

1 Answer

I have a 42" Maxent plasma tv. When turned on,

one or your tv mainboard was crashed, change it with new one

Jan 18, 2011 | Maxent MX-42HPM20 42 in. Plasma HDTV

1 Answer

My panasonic Th42pd50U shuts off then blinds 8 times in a cycle. it is 5 years old...Can this be fixed.

Blinking usually indicates a voltage problem, caused either by a sustain board or power supply and sometimes both.

This would take a workshop repair and would probably be beyond economical repair if parts are available.

Some people have been able to change the boards but I cannot advise about the voltage adjusts on fit that would fix if you managed to get the part cheap enough.

Jul 06, 2009 | Panasonic Viera TH-42PZ80U Plasma TV

1 Answer

Samsung HP-R5052 Plasma TV

It related with Power Board(50%) or Y-Main(50%).
But, if you use the power bar with surge protacton, need to check
the power bar's lamp when the TV is turning on & off.

Jan 31, 2009 | Samsung HP-R5052 50 in. Plasma HDTV

1 Answer

Panasonic TH-42PX80U won't turn on.

You are missing 15volts. If this is a new TV, it could be as simple as a plug not fully seated on the power supply. Regardless, the repair should be covered by warranty and Panasonic is one of the best when it comes to taking care of the customer. Ifd nI can be of further assistance, let me know

Dec 21, 2008 | Panasonic TH-42PD50U 42 in. Plasma EDTV

1 Answer

TV panasonic TH42pd50u

It clould be either problem with Driver boards or Y-sus or powersupply itself
Isolate SU and SD board first and power up,then see What is happening.Then Isolate SD then SU.

Good luck

Sep 01, 2008 | Panasonic TH-42PD50U 42 in. Plasma EDTV

1 Answer

Power related

was told by service it could be the power board

Jan 13, 2008 | Panasonic TH-42PD50U 42 in. Plasma EDTV

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