20 Most Recent Panasonic Viera TH-50PX80U Plasma TV - Page 6 Questions & Answers

Hello the blinking lights is a code to tell you what part of your tv has a fault. The service manual will tell you what the blinking code refers to. You can google the model number with the words service manual and you should get some results on where to download it. You can get get parts for this tv at www.interliquidparts.com

It sounds like you may have a problem with your y-sustain board. You can get get parts for this tv at www.interliquidparts.com

Hello,

The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.

The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.

All these can be checked on the power supply board.

But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.

The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)

You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.

What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).

You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.

Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.

If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.

I hope this helps.

Regards.

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You have a serious short in the power supply. If the fuse is blackened you are in big trouble. This may require a new power supply. The current power supply is not rebuild able. In most cases, when the fuse is bad as per say blackened, do replace with another fuse as more damage may occur. If the fuse is clean and opened, many times replacing the fuse will repair a TV. Please see a TV tech to see if the unit is feasible for repair. Thanks for asking and show all hands of support!

Hello
If cable box converter has damaged, there is no question about the main board of your TV. It has been damaged. Before replacing it, you have to check the power supply board also. If the TV has been pluged to power supply, surely there will be fault to it also. We can't predict the exact fault occurs during a lightning, because Trillions of volts are passes nearby. You have connected the TV with cable connection and to the home power supply too.
Just replace the main board first. If it does not hel you, replace the power board too. I hereby send picture of both boards.




The first one is main board and the other is power supply regulator board.

Make sure the television does this even when playing a dvd or video game because if it's only doing this on a cable box it could be the cable box.

Settings, signal, then service.

I would actually start with signal in this case but first I need clarification. Does the picture do this on all sources? or just when you're viewing television channels? Does it happen on all television channels? Is it that part of the picture is not showing? or has the picture shifted so that for four inches you do see darkness on the right hand side of your screen? The answers to these questions will lead to the correct answer to your specific problem.

However signal: make sure your cable box is set to the correct resolution. It should be set to 1080i. If you are receiving an hd signal and you're not properly receiving hd this will happen. If you're using an antenna you should be using one designed for hd signals.

Setting: Make sure the television is on the right input for hd from your cable or satellite tv receiver. Make sure your format/wide/aspect/hd zoom button on your television or cable, satellite, or tv remote does not need to be pressed until the picture is the right size. There is also a horizontal and vertical and possibly clock position setting that may be adjusted.


Finally if it is determined after the troubleshooting that it is not the signal or the setting the television will have to be properly diagnosed and serviced by a tech.

You may very well be out a TV, as the image layer of the screen is likely fried. For the most part, it's cheaper to throw it out and buy a new one rather than getting your hands on a new circuit board for it. I suppose if you could locate the specific source of the malfunction, you could replace the component(s), but that can be a REALLY lengthy process that involves having to possess extensive knowledge of digital circuits and probably some special equipment for running tests.

A PCB Printed circuit board is every single board in your TV. That is what PCB stands for Printed Circuit Board.

dear User,

may be capacitors are faulty.

if u can change the capacitors, then change main supply cpaitor..

Replace A Board or the main video board, or try and fix the board. Better to just get another board on ebay.
Panasonic TNPH0716ABS Main Unit is the part number for that.

the first you do is check the line cord,if there was cut- replace or soldier it.if nothing check the power button on your tv if it is broken go to the nearest technicians in you

From your description it sounds like your power supply if faulty. You can get parts for this TV at www.interliquidparts.com

Hi
A common problem for these is bad capacitors in the power supply, Remove the back from your Tv and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.
Hope this helps in solving the problem....

Anything is possible! It would be a lot of work because you have to totally disassemble the tv to get it broken down far enough to do that - and also make sure you dont break either of the glass when disassembling or reassembling.

thanks,
Michael