Question about Panasonic Viera TH-50PZ80U Plasma TV

3 Answers

Hello. During a thunderstorm, the picture froze momentarily which was then followed by the screen going blank. The power stayed on and the screen looked like it does when there is no video feed available. I turned the TV off and back on as well as unplugged and plugged it back in with the same result. The power light stays on with no blinking. No menu or volume text is ever displayed either. I'm fearing the worst, Is there anything worth trying?

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  • justinm427 Oct 12, 2010

    Thank you for your response. The TV was plugged into a surge protector (the DVR and DVD player were unharmed). The TV's from 2008 so there's no warranty left. It there one circuit board you think is the most likely candidate?

  • justinm427 Oct 13, 2010

    I'm asking for additional advice not because the thought if scrapping the entire TV is hard to take (which it is), but because it is incredibly wasteful. I'm not satisfied with a response of "new TV's are hard to repair." Based on the fact that the TV is made up of many independent boards, I'm confident that this TV can be repaired with the replacement of a few components. If that's truly not the case, please set me straight and I won't bother anyone here anymore. I'll gladly throw a part or two at it on the chance that it will fix the problem. Here's a little more info that I've gathered since my initial post. The TV powers up and it appears that the screen comes on but it's just black. The cooling fans run and LEDs are lit on some of the internal circuit boards. When turning the TV off, it will power down about 20 seconds after pressing the power button. The remote also works to power on and off. No menu text can be seen. The power LED does not blink, it stays lit while powered on. If there are one or two likely parts to try, please let me know. I appreciate your expertise to help me with this problem. I may very well end up with a new TV, but not without trying to save this one.

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Hi
Thanks for using FixYa. From what you have described it seems to be an issue with Y board however, Z and the logic board should also be checked. These boards are located on the right side of the unit and to check them you'll have to open the back of the unit. Once you have opened the back also check for any blown/bulged capacitors. All this is only recommended if you have electrical expertise & know how to solder/re-solder components as these units contain high voltages even when in off position.Please accept the solution if the issue is resolved or post a comment for further assistance.

Thanks
Rylee

Posted on Oct 13, 2010

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Hi, im sorry but i can only bring you bad news im afraid if you have any warranty then it will be covered but if your warranty has ran out then the only way it would be cheap enough to fix is if you could get hold of one with say smashed screen.

the problem is with new tellys they are not servicable like the old ones, you cant just by single chips and solder them onto the board they made these so you have to buy the whole board to get it working, and as it sounds like you have had a power surge then the chances are the video board is scrap and also the amp is bad the power board may be the only part working,

you could try a local repair shop on the off chance they may have the same telly in the shop that they are using for parts but basically thats the only real chance you have got unless its still got warranty left.

next time you get a telly or manage to get this one repaired make sure you buy a surge protector and then plug the telly into this as the next time you have a storm and lightning hits the power sub station the surge will be stopped by the surge protector and this then shuts everything down at the plug before the surge can reach the telly, they are not expensive to buy and you should also have one for any games console and pc or laptop as these will be damaged by small power surge.

let me know if you need further assistance ok

Posted on Oct 12, 2010

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No, it seems that the storm with a lighting strike gave a power surge to the house and
it possibly fried the tuner and the LCD logic controller. It may have just bypassed the p
power supply and went straight to the components that maintain voltage/current to the
LCD controller and the electronic tuner.
Advice:
If you get this repaired please purchase a "surge protection" power strip with rating of
50000 joules or more and see if it is guaranteed by the manufacture to replace your
appliance if it doesn't protect it.

Posted on Oct 13, 2010

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